28289820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{36269}}^1$

素因数の和:36294

約数の個数: 48

約数和(自身を含む): 85307040

約数和(自身を除く): 57017220

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, 36269, 72538, 108807, 145076, 181345, 217614, 362690, 435228, 471497, 544035, 725380, 942994, 1088070, 1414491, 1885988, 2176140, 2357485, 2828982, 4714970, 5657964, 7072455, 9429940, 14144910, 28289820]

約数ペア:

[(1, 28289820), (2, 14144910), (3, 9429940), (4, 7072455), (5, 5657964), (6, 4714970), (10, 2828982), (12, 2357485), (13, 2176140), (15, 1885988), (20, 1414491), (26, 1088070), (30, 942994), (39, 725380), (52, 544035), (60, 471497), (65, 435228), (78, 362690), (130, 217614), (156, 181345), (195, 145076), (260, 108807), (390, 72538), (780, 36269)]