31207960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{491}}^1$

素因数の和:736

約数の個数: 64

約数和(自身を含む): 80766720

約数和(自身を除く): 49558760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 227, 280, 454, 491, 908, 982, 1135, 1589, 1816, 1964, 2270, 2455, 3178, 3437, 3928, 4540, 4910, 6356, 6874, 7945, 9080, 9820, 12712, 13748, 15890, 17185, 19640, 27496, 31780, 34370, 63560, 68740, 111457, 137480, 222914, 445828, 557285, 780199, 891656, 1114570, 1560398, 2229140, 3120796, 3900995, 4458280, 6241592, 7801990, 15603980, 31207960]

約数ペア:

[(1, 31207960), (2, 15603980), (4, 7801990), (5, 6241592), (7, 4458280), (8, 3900995), (10, 3120796), (14, 2229140), (20, 1560398), (28, 1114570), (35, 891656), (40, 780199), (56, 557285), (70, 445828), (140, 222914), (227, 137480), (280, 111457), (454, 68740), (491, 63560), (908, 34370), (982, 31780), (1135, 27496), (1589, 19640), (1816, 17185), (1964, 15890), (2270, 13748), (2455, 12712), (3178, 9820), (3437, 9080), (3928, 7945), (4540, 6874), (4910, 6356)]