21000655172

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{552707}}^1$

素因数の和:552800

約数の個数: 48

約数和(自身を含む): 44570373120

約数和(自身を除く): 23569717948

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 59, 92, 118, 161, 236, 322, 413, 644, 826, 1357, 1652, 2714, 5428, 9499, 18998, 37996, 552707, 1105414, 2210828, 3868949, 7737898, 12712261, 15475796, 25424522, 32609713, 50849044, 65219426, 88985827, 130438852, 177971654, 228267991, 355943308, 456535982, 750023399, 913071964, 1500046798, 3000093596, 5250163793, 10500327586, 21000655172]

約数ペア:

[(1, 21000655172), (2, 10500327586), (4, 5250163793), (7, 3000093596), (14, 1500046798), (23, 913071964), (28, 750023399), (46, 456535982), (59, 355943308), (92, 228267991), (118, 177971654), (161, 130438852), (236, 88985827), (322, 65219426), (413, 50849044), (644, 32609713), (826, 25424522), (1357, 15475796), (1652, 12712261), (2714, 7737898), (5428, 3868949), (9499, 2210828), (18998, 1105414), (37996, 552707)]