80174620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 172440576

約数和(自身を除く): 92265956

約数列:

[1, 2, 4, 5, 10, 20, 71, 131, 142, 262, 284, 355, 431, 524, 655, 710, 862, 1310, 1420, 1724, 2155, 2620, 4310, 8620, 9301, 18602, 30601, 37204, 46505, 56461, 61202, 93010, 112922, 122404, 153005, 186020, 225844, 282305, 306010, 564610, 612020, 1129220, 4008731, 8017462, 16034924, 20043655, 40087310, 80174620]

約数ペア:

[(1, 80174620), (2, 40087310), (4, 20043655), (5, 16034924), (10, 8017462), (20, 4008731), (71, 1129220), (131, 612020), (142, 564610), (262, 306010), (284, 282305), (355, 225844), (431, 186020), (524, 153005), (655, 122404), (710, 112922), (862, 93010), (1310, 61202), (1420, 56461), (1724, 46505), (2155, 37204), (2620, 30601), (4310, 18602), (8620, 9301)]