21499660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11813}}^1$

素因数の和:11842

約数の個数: 48

約数和(自身を含む): 55573056

約数和(自身を除く): 34073396

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11813, 23626, 47252, 59065, 82691, 118130, 153569, 165382, 236260, 307138, 330764, 413455, 614276, 767845, 826910, 1074983, 1535690, 1653820, 2149966, 3071380, 4299932, 5374915, 10749830, 21499660]

約数ペア:

[(1, 21499660), (2, 10749830), (4, 5374915), (5, 4299932), (7, 3071380), (10, 2149966), (13, 1653820), (14, 1535690), (20, 1074983), (26, 826910), (28, 767845), (35, 614276), (52, 413455), (65, 330764), (70, 307138), (91, 236260), (130, 165382), (140, 153569), (182, 118130), (260, 82691), (364, 59065), (455, 47252), (910, 23626), (1820, 11813)]