21776390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1231}}^1$

素因数の和:1328

約数の個数: 32

約数和(自身を含む): 41247360

約数和(自身を除く): 19470970

約数列:

[1, 2, 5, 10, 29, 58, 61, 122, 145, 290, 305, 610, 1231, 1769, 2462, 3538, 6155, 8845, 12310, 17690, 35699, 71398, 75091, 150182, 178495, 356990, 375455, 750910, 2177639, 4355278, 10888195, 21776390]

約数ペア:

[(1, 21776390), (2, 10888195), (5, 4355278), (10, 2177639), (29, 750910), (58, 375455), (61, 356990), (122, 178495), (145, 150182), (290, 75091), (305, 71398), (610, 35699), (1231, 17690), (1769, 12310), (2462, 8845), (3538, 6155)]