257558340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{330203}}^1$

素因数の和:330228

約数の個数: 48

約数和(自身を含む): 776639808

約数和(自身を除く): 519081468

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, 330203, 660406, 990609, 1320812, 1651015, 1981218, 3302030, 3962436, 4292639, 4953045, 6604060, 8585278, 9906090, 12877917, 17170556, 19812180, 21463195, 25755834, 42926390, 51511668, 64389585, 85852780, 128779170, 257558340]

約数ペア:

[(1, 257558340), (2, 128779170), (3, 85852780), (4, 64389585), (5, 51511668), (6, 42926390), (10, 25755834), (12, 21463195), (13, 19812180), (15, 17170556), (20, 12877917), (26, 9906090), (30, 8585278), (39, 6604060), (52, 4953045), (60, 4292639), (65, 3962436), (78, 3302030), (130, 1981218), (156, 1651015), (195, 1320812), (260, 990609), (390, 660406), (780, 330203)]