21006050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1901}}^1$

素因数の和:1943

約数の個数: 48

約数和(自身を含む): 44575272

約数和(自身を除く): 23569222

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1901, 2210, 3802, 5525, 9505, 11050, 19010, 24713, 32317, 47525, 49426, 64634, 95050, 123565, 161585, 247130, 323170, 420121, 617825, 807925, 840242, 1235650, 1615850, 2100605, 4201210, 10503025, 21006050]

約数ペア:

[(1, 21006050), (2, 10503025), (5, 4201210), (10, 2100605), (13, 1615850), (17, 1235650), (25, 840242), (26, 807925), (34, 617825), (50, 420121), (65, 323170), (85, 247130), (130, 161585), (170, 123565), (221, 95050), (325, 64634), (425, 49426), (442, 47525), (650, 32317), (850, 24713), (1105, 19010), (1901, 11050), (2210, 9505), (3802, 5525)]