20533825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:154

約数の個数: 48

約数和(自身を含む): 29748096

約数和(自身を除く): 9214271

約数列:

[1, 5, 13, 23, 25, 41, 65, 67, 115, 205, 299, 325, 335, 533, 575, 871, 943, 1025, 1495, 1541, 1675, 2665, 2747, 4355, 4715, 7475, 7705, 12259, 13325, 13735, 20033, 21775, 23575, 35711, 38525, 61295, 63181, 68675, 100165, 178555, 306475, 315905, 500825, 821353, 892775, 1579525, 4106765, 20533825]

約数ペア:

[(1, 20533825), (5, 4106765), (13, 1579525), (23, 892775), (25, 821353), (41, 500825), (65, 315905), (67, 306475), (115, 178555), (205, 100165), (299, 68675), (325, 63181), (335, 61295), (533, 38525), (575, 35711), (871, 23575), (943, 21775), (1025, 20033), (1495, 13735), (1541, 13325), (1675, 12259), (2665, 7705), (2747, 7475), (4355, 4715)]