71001980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1367}}^1$

素因数の和:1443

約数の個数: 72

約数和(自身を含む): 176849568

約数和(自身を除く): 105847588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 371, 490, 530, 742, 980, 1060, 1367, 1484, 1855, 2597, 2734, 3710, 5194, 5468, 6835, 7420, 9569, 10388, 12985, 13670, 19138, 25970, 27340, 38276, 47845, 51940, 66983, 72451, 95690, 133966, 144902, 191380, 267932, 289804, 334915, 362255, 507157, 669830, 724510, 1014314, 1339660, 1449020, 2028628, 2535785, 3550099, 5071570, 7100198, 10143140, 14200396, 17750495, 35500990, 71001980]

約数ペア:

[(1, 71001980), (2, 35500990), (4, 17750495), (5, 14200396), (7, 10143140), (10, 7100198), (14, 5071570), (20, 3550099), (28, 2535785), (35, 2028628), (49, 1449020), (53, 1339660), (70, 1014314), (98, 724510), (106, 669830), (140, 507157), (196, 362255), (212, 334915), (245, 289804), (265, 267932), (371, 191380), (490, 144902), (530, 133966), (742, 95690), (980, 72451), (1060, 66983), (1367, 51940), (1484, 47845), (1855, 38276), (2597, 27340), (2734, 25970), (3710, 19138), (5194, 13670), (5468, 12985), (6835, 10388), (7420, 9569)]