20876328760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2405107}}^1$

素因数の和:2405156

約数の個数: 64

約数和(自身を含む): 55413688320

約数和(自身を除く): 34537359560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 2405107, 4810214, 9620428, 12025535, 16835749, 19240856, 24051070, 33671498, 48102140, 67342996, 74558317, 84178745, 96204280, 134685992, 149116634, 168357490, 298233268, 336714980, 372791585, 521908219, 596466536, 673429960, 745583170, 1043816438, 1491166340, 2087632876, 2609541095, 2982332680, 4175265752, 5219082190, 10438164380, 20876328760]

約数ペア:

[(1, 20876328760), (2, 10438164380), (4, 5219082190), (5, 4175265752), (7, 2982332680), (8, 2609541095), (10, 2087632876), (14, 1491166340), (20, 1043816438), (28, 745583170), (31, 673429960), (35, 596466536), (40, 521908219), (56, 372791585), (62, 336714980), (70, 298233268), (124, 168357490), (140, 149116634), (155, 134685992), (217, 96204280), (248, 84178745), (280, 74558317), (310, 67342996), (434, 48102140), (620, 33671498), (868, 24051070), (1085, 19240856), (1240, 16835749), (1736, 12025535), (2170, 9620428), (4340, 4810214), (8680, 2405107)]