19589240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^2$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 48311640

約数和(自身を除く): 28722400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 211, 220, 422, 440, 844, 1055, 1688, 2110, 2321, 4220, 4642, 8440, 9284, 11605, 18568, 23210, 44521, 46420, 89042, 92840, 178084, 222605, 356168, 445210, 489731, 890420, 979462, 1780840, 1958924, 2448655, 3917848, 4897310, 9794620, 19589240]

約数ペア:

[(1, 19589240), (2, 9794620), (4, 4897310), (5, 3917848), (8, 2448655), (10, 1958924), (11, 1780840), (20, 979462), (22, 890420), (40, 489731), (44, 445210), (55, 356168), (88, 222605), (110, 178084), (211, 92840), (220, 89042), (422, 46420), (440, 44521), (844, 23210), (1055, 18568), (1688, 11605), (2110, 9284), (2321, 8440), (4220, 4642)]