20812740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26683}}^1$

素因数の和:26708

約数の個数: 48

約数和(自身を含む): 62760768

約数和(自身を除く): 41948028

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, 26683, 53366, 80049, 106732, 133415, 160098, 266830, 320196, 346879, 400245, 533660, 693758, 800490, 1040637, 1387516, 1600980, 1734395, 2081274, 3468790, 4162548, 5203185, 6937580, 10406370, 20812740]

約数ペア:

[(1, 20812740), (2, 10406370), (3, 6937580), (4, 5203185), (5, 4162548), (6, 3468790), (10, 2081274), (12, 1734395), (13, 1600980), (15, 1387516), (20, 1040637), (26, 800490), (30, 693758), (39, 533660), (52, 400245), (60, 346879), (65, 320196), (78, 266830), (130, 160098), (156, 133415), (195, 106732), (260, 80049), (390, 53366), (780, 26683)]