31899980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{757}}^1$

素因数の和:823

約数の個数: 72

約数和(自身を含む): 79844688

約数和(自身を除く): 47944708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 490, 602, 757, 860, 980, 1204, 1505, 1514, 2107, 3010, 3028, 3785, 4214, 5299, 6020, 7570, 8428, 10535, 10598, 15140, 21070, 21196, 26495, 32551, 37093, 42140, 52990, 65102, 74186, 105980, 130204, 148372, 162755, 185465, 227857, 325510, 370930, 455714, 651020, 741860, 911428, 1139285, 1594999, 2278570, 3189998, 4557140, 6379996, 7974995, 15949990, 31899980]

約数ペア:

[(1, 31899980), (2, 15949990), (4, 7974995), (5, 6379996), (7, 4557140), (10, 3189998), (14, 2278570), (20, 1594999), (28, 1139285), (35, 911428), (43, 741860), (49, 651020), (70, 455714), (86, 370930), (98, 325510), (140, 227857), (172, 185465), (196, 162755), (215, 148372), (245, 130204), (301, 105980), (430, 74186), (490, 65102), (602, 52990), (757, 42140), (860, 37093), (980, 32551), (1204, 26495), (1505, 21196), (1514, 21070), (2107, 15140), (3010, 10598), (3028, 10535), (3785, 8428), (4214, 7570), (5299, 6020)]