1638377975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{12893}}^1$

素因数の和:12956

約数の個数: 48

約数和(自身を含む): 2417470272

約数和(自身を除く): 779092297

約数列:

[1, 5, 13, 17, 23, 25, 65, 85, 115, 221, 299, 325, 391, 425, 575, 1105, 1495, 1955, 5083, 5525, 7475, 9775, 12893, 25415, 64465, 127075, 167609, 219181, 296539, 322325, 838045, 1095905, 1482695, 2849353, 3855007, 4190225, 5041163, 5479525, 7413475, 14246765, 19275035, 25205815, 65535119, 71233825, 96375175, 126029075, 327675595, 1638377975]

約数ペア:

[(1, 1638377975), (5, 327675595), (13, 126029075), (17, 96375175), (23, 71233825), (25, 65535119), (65, 25205815), (85, 19275035), (115, 14246765), (221, 7413475), (299, 5479525), (325, 5041163), (391, 4190225), (425, 3855007), (575, 2849353), (1105, 1482695), (1495, 1095905), (1955, 838045), (5083, 322325), (5525, 296539), (7475, 219181), (9775, 167609), (12893, 127075), (25415, 64465)]