21690500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:150

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 31144828

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 47, 50, 52, 65, 71, 94, 100, 125, 130, 142, 188, 235, 250, 260, 284, 325, 355, 470, 500, 611, 650, 710, 923, 940, 1175, 1222, 1300, 1420, 1625, 1775, 1846, 2350, 2444, 3055, 3250, 3337, 3550, 3692, 4615, 4700, 5875, 6110, 6500, 6674, 7100, 8875, 9230, 11750, 12220, 13348, 15275, 16685, 17750, 18460, 23075, 23500, 30550, 33370, 35500, 43381, 46150, 61100, 66740, 76375, 83425, 86762, 92300, 115375, 152750, 166850, 173524, 216905, 230750, 305500, 333700, 417125, 433810, 461500, 834250, 867620, 1084525, 1668500, 2169050, 4338100, 5422625, 10845250, 21690500]

約数ペア:

[(1, 21690500), (2, 10845250), (4, 5422625), (5, 4338100), (10, 2169050), (13, 1668500), (20, 1084525), (25, 867620), (26, 834250), (47, 461500), (50, 433810), (52, 417125), (65, 333700), (71, 305500), (94, 230750), (100, 216905), (125, 173524), (130, 166850), (142, 152750), (188, 115375), (235, 92300), (250, 86762), (260, 83425), (284, 76375), (325, 66740), (355, 61100), (470, 46150), (500, 43381), (611, 35500), (650, 33370), (710, 30550), (923, 23500), (940, 23075), (1175, 18460), (1222, 17750), (1300, 16685), (1420, 15275), (1625, 13348), (1775, 12220), (1846, 11750), (2350, 9230), (2444, 8875), (3055, 7100), (3250, 6674), (3337, 6500), (3550, 6110), (3692, 5875), (4615, 4700)]