21392390

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 39626496

約数和(自身を除く): 18234106

約数列:

[1, 2, 5, 10, 53, 106, 181, 223, 265, 362, 446, 530, 905, 1115, 1810, 2230, 9593, 11819, 19186, 23638, 40363, 47965, 59095, 80726, 95930, 118190, 201815, 403630, 2139239, 4278478, 10696195, 21392390]

約数ペア:

[(1, 21392390), (2, 10696195), (5, 4278478), (10, 2139239), (53, 403630), (106, 201815), (181, 118190), (223, 95930), (265, 80726), (362, 59095), (446, 47965), (530, 40363), (905, 23638), (1115, 19186), (1810, 11819), (2230, 9593)]