21943040

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 62791680

約数和(自身を除く): 40848640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 79, 80, 112, 124, 128, 140, 155, 158, 160, 217, 224, 248, 256, 280, 310, 316, 320, 395, 434, 448, 496, 553, 560, 620, 632, 640, 790, 868, 896, 992, 1085, 1106, 1120, 1240, 1264, 1280, 1580, 1736, 1792, 1984, 2170, 2212, 2240, 2449, 2480, 2528, 2765, 3160, 3472, 3968, 4340, 4424, 4480, 4898, 4960, 5056, 5530, 6320, 6944, 7936, 8680, 8848, 8960, 9796, 9920, 10112, 11060, 12245, 12640, 13888, 17143, 17360, 17696, 19592, 19840, 20224, 22120, 24490, 25280, 27776, 34286, 34720, 35392, 39184, 39680, 44240, 48980, 50560, 55552, 68572, 69440, 70784, 78368, 85715, 88480, 97960, 101120, 137144, 138880, 141568, 156736, 171430, 176960, 195920, 274288, 277760, 313472, 342860, 353920, 391840, 548576, 626944, 685720, 707840, 783680, 1097152, 1371440, 1567360, 2194304, 2742880, 3134720, 4388608, 5485760, 10971520, 21943040]

約数ペア:

[(1, 21943040), (2, 10971520), (4, 5485760), (5, 4388608), (7, 3134720), (8, 2742880), (10, 2194304), (14, 1567360), (16, 1371440), (20, 1097152), (28, 783680), (31, 707840), (32, 685720), (35, 626944), (40, 548576), (56, 391840), (62, 353920), (64, 342860), (70, 313472), (79, 277760), (80, 274288), (112, 195920), (124, 176960), (128, 171430), (140, 156736), (155, 141568), (158, 138880), (160, 137144), (217, 101120), (224, 97960), (248, 88480), (256, 85715), (280, 78368), (310, 70784), (316, 69440), (320, 68572), (395, 55552), (434, 50560), (448, 48980), (496, 44240), (553, 39680), (560, 39184), (620, 35392), (632, 34720), (640, 34286), (790, 27776), (868, 25280), (896, 24490), (992, 22120), (1085, 20224), (1106, 19840), (1120, 19592), (1240, 17696), (1264, 17360), (1280, 17143), (1580, 13888), (1736, 12640), (1792, 12245), (1984, 11060), (2170, 10112), (2212, 9920), (2240, 9796), (2449, 8960), (2480, 8848), (2528, 8680), (2765, 7936), (3160, 6944), (3472, 6320), (3968, 5530), (4340, 5056), (4424, 4960), (4480, 4898)]