21208885345

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1\times {\mathrm{2467}}^1$

素因数の和:3001

約数の個数: 32

約数和(自身を含む): 26308958976

約数和(自身を除く): 5100073631

約数列:

[1, 5, 61, 71, 305, 355, 397, 1985, 2467, 4331, 12335, 21655, 24217, 28187, 121085, 140935, 150487, 175157, 752435, 875785, 979399, 1719407, 4896995, 8597035, 10684577, 53422885, 59743339, 69537329, 298716695, 347686645, 4241777069, 21208885345]

約数ペア:

[(1, 21208885345), (5, 4241777069), (61, 347686645), (71, 298716695), (305, 69537329), (355, 59743339), (397, 53422885), (1985, 10684577), (2467, 8597035), (4331, 4896995), (12335, 1719407), (21655, 979399), (24217, 875785), (28187, 752435), (121085, 175157), (140935, 150487)]