21753316

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{859}}^1$

素因数の和:1363

約数の個数: 24

約数和(自身を含む): 41128640

約数和(自身を除く): 19375324

約数列:

[1, 2, 4, 13, 26, 52, 487, 859, 974, 1718, 1948, 3436, 6331, 11167, 12662, 22334, 25324, 44668, 418333, 836666, 1673332, 5438329, 10876658, 21753316]

約数ペア:

[(1, 21753316), (2, 10876658), (4, 5438329), (13, 1673332), (26, 836666), (52, 418333), (487, 44668), (859, 25324), (974, 22334), (1718, 12662), (1948, 11167), (3436, 6331)]