20213875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:328

約数の個数: 32

約数和(自身を含む): 28087488

約数和(自身を除く): 7873613

約数列:

[1, 5, 11, 25, 55, 61, 125, 241, 275, 305, 671, 1205, 1375, 1525, 2651, 3355, 6025, 7625, 13255, 14701, 16775, 30125, 66275, 73505, 83875, 161711, 331375, 367525, 808555, 1837625, 4042775, 20213875]

約数ペア:

[(1, 20213875), (5, 4042775), (11, 1837625), (25, 808555), (55, 367525), (61, 331375), (125, 161711), (241, 83875), (275, 73505), (305, 66275), (671, 30125), (1205, 16775), (1375, 14701), (1525, 13255), (2651, 7625), (3355, 6025)]