28328820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36319}}^1$

素因数の和:36344

約数の個数: 48

約数和(自身を含む): 85424640

約数和(自身を除く): 57095820

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, 36319, 72638, 108957, 145276, 181595, 217914, 363190, 435828, 472147, 544785, 726380, 944294, 1089570, 1416441, 1888588, 2179140, 2360735, 2832882, 4721470, 5665764, 7082205, 9442940, 14164410, 28328820]

約数ペア:

[(1, 28328820), (2, 14164410), (3, 9442940), (4, 7082205), (5, 5665764), (6, 4721470), (10, 2832882), (12, 2360735), (13, 2179140), (15, 1888588), (20, 1416441), (26, 1089570), (30, 944294), (39, 726380), (52, 544785), (60, 472147), (65, 435828), (78, 363190), (130, 217914), (156, 181595), (195, 145276), (260, 108957), (390, 72638), (780, 36319)]