20912340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4909}}^1$

素因数の和:4992

約数の個数: 48

約数和(自身を含む): 59391360

約数和(自身を除く): 38479020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 4909, 9818, 14727, 19636, 24545, 29454, 49090, 58908, 73635, 98180, 147270, 294540, 348539, 697078, 1045617, 1394156, 1742695, 2091234, 3485390, 4182468, 5228085, 6970780, 10456170, 20912340]

約数ペア:

[(1, 20912340), (2, 10456170), (3, 6970780), (4, 5228085), (5, 4182468), (6, 3485390), (10, 2091234), (12, 1742695), (15, 1394156), (20, 1045617), (30, 697078), (60, 348539), (71, 294540), (142, 147270), (213, 98180), (284, 73635), (355, 58908), (426, 49090), (710, 29454), (852, 24545), (1065, 19636), (1420, 14727), (2130, 9818), (4260, 4909)]