21435180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27481}}^1$

素因数の和:27506

約数の個数: 48

約数和(自身を含む): 64637664

約数和(自身を除く): 43202484

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, 27481, 54962, 82443, 109924, 137405, 164886, 274810, 329772, 357253, 412215, 549620, 714506, 824430, 1071759, 1429012, 1648860, 1786265, 2143518, 3572530, 4287036, 5358795, 7145060, 10717590, 21435180]

約数ペア:

[(1, 21435180), (2, 10717590), (3, 7145060), (4, 5358795), (5, 4287036), (6, 3572530), (10, 2143518), (12, 1786265), (13, 1648860), (15, 1429012), (20, 1071759), (26, 824430), (30, 714506), (39, 549620), (52, 412215), (60, 357253), (65, 329772), (78, 274810), (130, 164886), (156, 137405), (195, 109924), (260, 82443), (390, 54962), (780, 27481)]