172940820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{221719}}^1$

素因数の和:221744

約数の個数: 48

約数和(自身を含む): 521485440

約数和(自身を除く): 348544620

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, 221719, 443438, 665157, 886876, 1108595, 1330314, 2217190, 2660628, 2882347, 3325785, 4434380, 5764694, 6651570, 8647041, 11529388, 13303140, 14411735, 17294082, 28823470, 34588164, 43235205, 57646940, 86470410, 172940820]

約数ペア:

[(1, 172940820), (2, 86470410), (3, 57646940), (4, 43235205), (5, 34588164), (6, 28823470), (10, 17294082), (12, 14411735), (13, 13303140), (15, 11529388), (20, 8647041), (26, 6651570), (30, 5764694), (39, 4434380), (52, 3325785), (60, 2882347), (65, 2660628), (78, 2217190), (130, 1330314), (156, 1108595), (195, 886876), (260, 665157), (390, 443438), (780, 221719)]