211231340

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1\times {\mathrm{971}}^1$

素因数の和:1202

約数の個数: 48

約数和(自身を含む): 453146400

約数和(自身を除く): 241915060

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 149, 292, 298, 365, 596, 730, 745, 971, 1460, 1490, 1942, 2980, 3884, 4855, 9710, 10877, 19420, 21754, 43508, 54385, 70883, 108770, 141766, 144679, 217540, 283532, 289358, 354415, 578716, 708830, 723395, 1417660, 1446790, 2893580, 10561567, 21123134, 42246268, 52807835, 105615670, 211231340]

約数ペア:

[(1, 211231340), (2, 105615670), (4, 52807835), (5, 42246268), (10, 21123134), (20, 10561567), (73, 2893580), (146, 1446790), (149, 1417660), (292, 723395), (298, 708830), (365, 578716), (596, 354415), (730, 289358), (745, 283532), (971, 217540), (1460, 144679), (1490, 141766), (1942, 108770), (2980, 70883), (3884, 54385), (4855, 43508), (9710, 21754), (10877, 19420)]