21541260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27617}}^1$

素因数の和:27642

約数の個数: 48

約数和(自身を含む): 64957536

約数和(自身を除く): 43416276

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27617, 55234, 82851, 110468, 138085, 165702, 276170, 331404, 359021, 414255, 552340, 718042, 828510, 1077063, 1436084, 1657020, 1795105, 2154126, 3590210, 4308252, 5385315, 7180420, 10770630, 21541260]

約数ペア:

[(1, 21541260), (2, 10770630), (3, 7180420), (4, 5385315), (5, 4308252), (6, 3590210), (10, 2154126), (12, 1795105), (13, 1657020), (15, 1436084), (20, 1077063), (26, 828510), (30, 718042), (39, 552340), (52, 414255), (60, 359021), (65, 331404), (78, 276170), (130, 165702), (156, 138085), (195, 110468), (260, 82851), (390, 55234), (780, 27617)]