20896380

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12899}}^1$

素因数の和:12920

約数の個数: 60

約数和(自身を含む): 65557800

約数和(自身を除く): 44661420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12899, 25798, 38697, 51596, 64495, 77394, 116091, 128990, 154788, 193485, 232182, 257980, 348273, 386970, 464364, 580455, 696546, 773940, 1044819, 1160910, 1393092, 1741365, 2089638, 2321820, 3482730, 4179276, 5224095, 6965460, 10448190, 20896380]

約数ペア:

[(1, 20896380), (2, 10448190), (3, 6965460), (4, 5224095), (5, 4179276), (6, 3482730), (9, 2321820), (10, 2089638), (12, 1741365), (15, 1393092), (18, 1160910), (20, 1044819), (27, 773940), (30, 696546), (36, 580455), (45, 464364), (54, 386970), (60, 348273), (81, 257980), (90, 232182), (108, 193485), (135, 154788), (162, 128990), (180, 116091), (270, 77394), (324, 64495), (405, 51596), (540, 38697), (810, 25798), (1620, 12899)]