21784750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6703}}^1$

素因数の和:6733

約数の個数: 32

約数和(自身を含む): 43924608

約数和(自身を除く): 22139858

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6703, 13406, 33515, 67030, 87139, 167575, 174278, 335150, 435695, 837875, 871390, 1675750, 2178475, 4356950, 10892375, 21784750]

約数ペア:

[(1, 21784750), (2, 10892375), (5, 4356950), (10, 2178475), (13, 1675750), (25, 871390), (26, 837875), (50, 435695), (65, 335150), (125, 174278), (130, 167575), (250, 87139), (325, 67030), (650, 33515), (1625, 13406), (3250, 6703)]