19431680

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:104

約数の個数: 144

約数和(自身を含む): 52980480

約数和(自身を除く): 33548800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 47, 64, 68, 76, 80, 85, 94, 95, 128, 136, 152, 160, 170, 188, 190, 235, 256, 272, 304, 320, 323, 340, 376, 380, 470, 544, 608, 640, 646, 680, 752, 760, 799, 893, 940, 1088, 1216, 1280, 1292, 1360, 1504, 1520, 1598, 1615, 1786, 1880, 2176, 2432, 2584, 2720, 3008, 3040, 3196, 3230, 3572, 3760, 3995, 4352, 4465, 4864, 5168, 5440, 6016, 6080, 6392, 6460, 7144, 7520, 7990, 8930, 10336, 10880, 12032, 12160, 12784, 12920, 14288, 15040, 15181, 15980, 17860, 20672, 21760, 24320, 25568, 25840, 28576, 30080, 30362, 31960, 35720, 41344, 51136, 51680, 57152, 60160, 60724, 63920, 71440, 75905, 82688, 102272, 103360, 114304, 121448, 127840, 142880, 151810, 204544, 206720, 228608, 242896, 255680, 285760, 303620, 413440, 485792, 511360, 571520, 607240, 971584, 1022720, 1143040, 1214480, 1943168, 2428960, 3886336, 4857920, 9715840, 19431680]

約数ペア:

[(1, 19431680), (2, 9715840), (4, 4857920), (5, 3886336), (8, 2428960), (10, 1943168), (16, 1214480), (17, 1143040), (19, 1022720), (20, 971584), (32, 607240), (34, 571520), (38, 511360), (40, 485792), (47, 413440), (64, 303620), (68, 285760), (76, 255680), (80, 242896), (85, 228608), (94, 206720), (95, 204544), (128, 151810), (136, 142880), (152, 127840), (160, 121448), (170, 114304), (188, 103360), (190, 102272), (235, 82688), (256, 75905), (272, 71440), (304, 63920), (320, 60724), (323, 60160), (340, 57152), (376, 51680), (380, 51136), (470, 41344), (544, 35720), (608, 31960), (640, 30362), (646, 30080), (680, 28576), (752, 25840), (760, 25568), (799, 24320), (893, 21760), (940, 20672), (1088, 17860), (1216, 15980), (1280, 15181), (1292, 15040), (1360, 14288), (1504, 12920), (1520, 12784), (1598, 12160), (1615, 12032), (1786, 10880), (1880, 10336), (2176, 8930), (2432, 7990), (2584, 7520), (2720, 7144), (3008, 6460), (3040, 6392), (3196, 6080), (3230, 6016), (3572, 5440), (3760, 5168), (3995, 4864), (4352, 4465)]