258236420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{993217}}^1$

素因数の和:993239

約数の個数: 24

約数和(自身を含む): 584012184

約数和(自身を除く): 325775764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 993217, 1986434, 3972868, 4966085, 9932170, 12911821, 19864340, 25823642, 51647284, 64559105, 129118210, 258236420]

約数ペア:

[(1, 258236420), (2, 129118210), (4, 64559105), (5, 51647284), (10, 25823642), (13, 19864340), (20, 12911821), (26, 9932170), (52, 4966085), (65, 3972868), (130, 1986434), (260, 993217)]