31451980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{7247}}^1$

素因数の和:7294

約数の個数: 48

約数和(自身を含む): 77930496

約数和(自身を除く): 46478516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 7247, 14494, 28988, 36235, 50729, 72470, 101458, 144940, 202916, 224657, 253645, 449314, 507290, 898628, 1014580, 1123285, 1572599, 2246570, 3145198, 4493140, 6290396, 7862995, 15725990, 31451980]

約数ペア:

[(1, 31451980), (2, 15725990), (4, 7862995), (5, 6290396), (7, 4493140), (10, 3145198), (14, 2246570), (20, 1572599), (28, 1123285), (31, 1014580), (35, 898628), (62, 507290), (70, 449314), (124, 253645), (140, 224657), (155, 202916), (217, 144940), (310, 101458), (434, 72470), (620, 50729), (868, 36235), (1085, 28988), (2170, 14494), (4340, 7247)]