81900910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{90001}}^1$

素因数の和:90028

約数の個数: 32

約数和(自身を含む): 181444032

約数和(自身を除く): 99543122

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 90001, 180002, 450005, 630007, 900010, 1170013, 1260014, 2340026, 3150035, 5850065, 6300070, 8190091, 11700130, 16380182, 40950455, 81900910]

約数ペア:

[(1, 81900910), (2, 40950455), (5, 16380182), (7, 11700130), (10, 8190091), (13, 6300070), (14, 5850065), (26, 3150035), (35, 2340026), (65, 1260014), (70, 1170013), (91, 900010), (130, 630007), (182, 450005), (455, 180002), (910, 90001)]