21000887978

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{677}}^1\times {\mathrm{96337}}^1$

素因数の和:97046

約数の個数: 32

約数和(自身を含む): 37622686464

約数和(自身を除く): 16621798486

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 677, 1354, 4739, 9478, 15571, 31142, 96337, 108997, 192674, 217994, 674359, 1348718, 2215751, 4431502, 15510257, 31020514, 65220149, 130440298, 456541043, 913082086, 1500063427, 3000126854, 10500443989, 21000887978]

約数ペア:

[(1, 21000887978), (2, 10500443989), (7, 3000126854), (14, 1500063427), (23, 913082086), (46, 456541043), (161, 130440298), (322, 65220149), (677, 31020514), (1354, 15510257), (4739, 4431502), (9478, 2215751), (15571, 1348718), (31142, 674359), (96337, 217994), (108997, 192674)]