21075070

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{821}}^1$

素因数の和:996

約数の個数: 32

約数和(自身を含む): 40481856

約数和(自身を除く): 19406786

約数列:

[1, 2, 5, 10, 17, 34, 85, 151, 170, 302, 755, 821, 1510, 1642, 2567, 4105, 5134, 8210, 12835, 13957, 25670, 27914, 69785, 123971, 139570, 247942, 619855, 1239710, 2107507, 4215014, 10537535, 21075070]

約数ペア:

[(1, 21075070), (2, 10537535), (5, 4215014), (10, 2107507), (17, 1239710), (34, 619855), (85, 247942), (151, 139570), (170, 123971), (302, 69785), (755, 27914), (821, 25670), (1510, 13957), (1642, 12835), (2567, 8210), (4105, 5134)]