19752020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{881}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 24700780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 590, 881, 1121, 1180, 1762, 2242, 3524, 4405, 4484, 5605, 8810, 11210, 16739, 17620, 22420, 33478, 51979, 66956, 83695, 103958, 167390, 207916, 259895, 334780, 519790, 987601, 1039580, 1975202, 3950404, 4938005, 9876010, 19752020]

約数ペア:

[(1, 19752020), (2, 9876010), (4, 4938005), (5, 3950404), (10, 1975202), (19, 1039580), (20, 987601), (38, 519790), (59, 334780), (76, 259895), (95, 207916), (118, 167390), (190, 103958), (236, 83695), (295, 66956), (380, 51979), (590, 33478), (881, 22420), (1121, 17620), (1180, 16739), (1762, 11210), (2242, 8810), (3524, 5605), (4405, 4484)]