31493540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1361}}^1$

素因数の和:1472

約数の個数: 48

約数和(自身を含む): 72077040

約数和(自身を除く): 40583500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 89, 130, 178, 260, 356, 445, 890, 1157, 1361, 1780, 2314, 2722, 4628, 5444, 5785, 6805, 11570, 13610, 17693, 23140, 27220, 35386, 70772, 88465, 121129, 176930, 242258, 353860, 484516, 605645, 1211290, 1574677, 2422580, 3149354, 6298708, 7873385, 15746770, 31493540]

約数ペア:

[(1, 31493540), (2, 15746770), (4, 7873385), (5, 6298708), (10, 3149354), (13, 2422580), (20, 1574677), (26, 1211290), (52, 605645), (65, 484516), (89, 353860), (130, 242258), (178, 176930), (260, 121129), (356, 88465), (445, 70772), (890, 35386), (1157, 27220), (1361, 23140), (1780, 17693), (2314, 13610), (2722, 11570), (4628, 6805), (5444, 5785)]