406380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{521}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 1227744

約数和(自身を除く): 821364

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, 521, 780, 1042, 1563, 2084, 2605, 3126, 5210, 6252, 6773, 7815, 10420, 13546, 15630, 20319, 27092, 31260, 33865, 40638, 67730, 81276, 101595, 135460, 203190, 406380]

約数ペア:

[(1, 406380), (2, 203190), (3, 135460), (4, 101595), (5, 81276), (6, 67730), (10, 40638), (12, 33865), (13, 31260), (15, 27092), (20, 20319), (26, 15630), (30, 13546), (39, 10420), (52, 7815), (60, 6773), (65, 6252), (78, 5210), (130, 3126), (156, 2605), (195, 2084), (260, 1563), (390, 1042), (521, 780)]