21063250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6481}}^1$

素因数の和:6511

約数の個数: 32

約数和(自身を含む): 42470064

約数和(自身を除く): 21406814

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6481, 12962, 32405, 64810, 84253, 162025, 168506, 324050, 421265, 810125, 842530, 1620250, 2106325, 4212650, 10531625, 21063250]

約数ペア:

[(1, 21063250), (2, 10531625), (5, 4212650), (10, 2106325), (13, 1620250), (25, 842530), (26, 810125), (50, 421265), (65, 324050), (125, 168506), (130, 162025), (250, 84253), (325, 64810), (650, 32405), (1625, 12962), (3250, 6481)]