18943925

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{757}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 31581312

約数和(自身を除く): 12637387

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 143, 175, 275, 325, 385, 455, 715, 757, 1001, 1925, 2275, 3575, 3785, 5005, 5299, 8327, 9841, 18925, 25025, 26495, 41635, 49205, 58289, 68887, 108251, 132475, 208175, 246025, 291445, 344435, 541255, 757757, 1457225, 1722175, 2706275, 3788785, 18943925]

約数ペア:

[(1, 18943925), (5, 3788785), (7, 2706275), (11, 1722175), (13, 1457225), (25, 757757), (35, 541255), (55, 344435), (65, 291445), (77, 246025), (91, 208175), (143, 132475), (175, 108251), (275, 68887), (325, 58289), (385, 49205), (455, 41635), (715, 26495), (757, 25025), (1001, 18925), (1925, 9841), (2275, 8327), (3575, 5299), (3785, 5005)]