648820380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{831821}}^1$

素因数の和:831846

約数の個数: 48

約数和(自身を含む): 1956445344

約数和(自身を除く): 1307624964

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, 831821, 1663642, 2495463, 3327284, 4159105, 4990926, 8318210, 9981852, 10813673, 12477315, 16636420, 21627346, 24954630, 32441019, 43254692, 49909260, 54068365, 64882038, 108136730, 129764076, 162205095, 216273460, 324410190, 648820380]

約数ペア:

[(1, 648820380), (2, 324410190), (3, 216273460), (4, 162205095), (5, 129764076), (6, 108136730), (10, 64882038), (12, 54068365), (13, 49909260), (15, 43254692), (20, 32441019), (26, 24954630), (30, 21627346), (39, 16636420), (52, 12477315), (60, 10813673), (65, 9981852), (78, 8318210), (130, 4990926), (156, 4159105), (195, 3327284), (260, 2495463), (390, 1663642), (780, 831821)]