217882880

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:105

約数の個数: 216

約数和(自身を含む): 602407680

約数和(自身を除く): 384524800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 31, 32, 34, 38, 40, 62, 64, 68, 76, 80, 85, 95, 124, 128, 136, 152, 155, 160, 170, 190, 248, 256, 272, 289, 304, 310, 320, 323, 340, 380, 496, 527, 544, 578, 589, 608, 620, 640, 646, 680, 760, 992, 1054, 1088, 1156, 1178, 1216, 1240, 1280, 1292, 1360, 1445, 1520, 1615, 1984, 2108, 2176, 2312, 2356, 2432, 2480, 2584, 2635, 2720, 2890, 2945, 3040, 3230, 3968, 4216, 4352, 4624, 4712, 4864, 4960, 5168, 5270, 5440, 5491, 5780, 5890, 6080, 6460, 7936, 8432, 8959, 9248, 9424, 9920, 10013, 10336, 10540, 10880, 10982, 11560, 11780, 12160, 12920, 16864, 17918, 18496, 18848, 19840, 20026, 20672, 21080, 21760, 21964, 23120, 23560, 24320, 25840, 27455, 33728, 35836, 36992, 37696, 39680, 40052, 41344, 42160, 43928, 44795, 46240, 47120, 50065, 51680, 54910, 67456, 71672, 73984, 75392, 80104, 82688, 84320, 87856, 89590, 92480, 94240, 100130, 103360, 109820, 134912, 143344, 150784, 160208, 168640, 170221, 175712, 179180, 184960, 188480, 200260, 206720, 219640, 286688, 320416, 337280, 340442, 351424, 358360, 369920, 376960, 400520, 413440, 439280, 573376, 640832, 674560, 680884, 702848, 716720, 753920, 801040, 851105, 878560, 1146752, 1281664, 1361768, 1405696, 1433440, 1602080, 1702210, 1757120, 2293504, 2563328, 2723536, 2866880, 3204160, 3404420, 3514240, 5447072, 5733760, 6408320, 6808840, 7028480, 10894144, 11467520, 12816640, 13617680, 21788288, 27235360, 43576576, 54470720, 108941440, 217882880]

約数ペア:

[(1, 217882880), (2, 108941440), (4, 54470720), (5, 43576576), (8, 27235360), (10, 21788288), (16, 13617680), (17, 12816640), (19, 11467520), (20, 10894144), (31, 7028480), (32, 6808840), (34, 6408320), (38, 5733760), (40, 5447072), (62, 3514240), (64, 3404420), (68, 3204160), (76, 2866880), (80, 2723536), (85, 2563328), (95, 2293504), (124, 1757120), (128, 1702210), (136, 1602080), (152, 1433440), (155, 1405696), (160, 1361768), (170, 1281664), (190, 1146752), (248, 878560), (256, 851105), (272, 801040), (289, 753920), (304, 716720), (310, 702848), (320, 680884), (323, 674560), (340, 640832), (380, 573376), (496, 439280), (527, 413440), (544, 400520), (578, 376960), (589, 369920), (608, 358360), (620, 351424), (640, 340442), (646, 337280), (680, 320416), (760, 286688), (992, 219640), (1054, 206720), (1088, 200260), (1156, 188480), (1178, 184960), (1216, 179180), (1240, 175712), (1280, 170221), (1292, 168640), (1360, 160208), (1445, 150784), (1520, 143344), (1615, 134912), (1984, 109820), (2108, 103360), (2176, 100130), (2312, 94240), (2356, 92480), (2432, 89590), (2480, 87856), (2584, 84320), (2635, 82688), (2720, 80104), (2890, 75392), (2945, 73984), (3040, 71672), (3230, 67456), (3968, 54910), (4216, 51680), (4352, 50065), (4624, 47120), (4712, 46240), (4864, 44795), (4960, 43928), (5168, 42160), (5270, 41344), (5440, 40052), (5491, 39680), (5780, 37696), (5890, 36992), (6080, 35836), (6460, 33728), (7936, 27455), (8432, 25840), (8959, 24320), (9248, 23560), (9424, 23120), (9920, 21964), (10013, 21760), (10336, 21080), (10540, 20672), (10880, 20026), (10982, 19840), (11560, 18848), (11780, 18496), (12160, 17918), (12920, 16864)]