21739790

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{227}}^1$

素因数の和:452

約数の個数: 32

約数和(自身を含む): 40202784

約数和(自身を除く): 18462994

約数列:

[1, 2, 5, 10, 61, 122, 157, 227, 305, 314, 454, 610, 785, 1135, 1570, 2270, 9577, 13847, 19154, 27694, 35639, 47885, 69235, 71278, 95770, 138470, 178195, 356390, 2173979, 4347958, 10869895, 21739790]

約数ペア:

[(1, 21739790), (2, 10869895), (5, 4347958), (10, 2173979), (61, 356390), (122, 178195), (157, 138470), (227, 95770), (305, 71278), (314, 69235), (454, 47885), (610, 35639), (785, 27694), (1135, 19154), (1570, 13847), (2270, 9577)]