2019940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 4847472

約数和(自身を除く): 2827532

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 457, 884, 914, 1105, 1828, 2210, 2285, 4420, 4570, 5941, 7769, 9140, 11882, 15538, 23764, 29705, 31076, 38845, 59410, 77690, 100997, 118820, 155380, 201994, 403988, 504985, 1009970, 2019940]

約数ペア:

[(1, 2019940), (2, 1009970), (4, 504985), (5, 403988), (10, 201994), (13, 155380), (17, 118820), (20, 100997), (26, 77690), (34, 59410), (52, 38845), (65, 31076), (68, 29705), (85, 23764), (130, 15538), (170, 11882), (221, 9140), (260, 7769), (340, 5941), (442, 4570), (457, 4420), (884, 2285), (914, 2210), (1105, 1828)]