20003960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26321}}^1$

素因数の和:26351

約数の個数: 32

約数和(自身を含む): 47379600

約数和(自身を除く): 27375640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26321, 52642, 105284, 131605, 210568, 263210, 500099, 526420, 1000198, 1052840, 2000396, 2500495, 4000792, 5000990, 10001980, 20003960]

約数ペア:

[(1, 20003960), (2, 10001980), (4, 5000990), (5, 4000792), (8, 2500495), (10, 2000396), (19, 1052840), (20, 1000198), (38, 526420), (40, 500099), (76, 263210), (95, 210568), (152, 131605), (190, 105284), (380, 52642), (760, 26321)]