12487940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 28123200

約数和(自身を除く): 15635260

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 59, 76, 95, 118, 190, 236, 295, 380, 557, 590, 1114, 1121, 1180, 2228, 2242, 2785, 4484, 5570, 5605, 10583, 11140, 11210, 21166, 22420, 32863, 42332, 52915, 65726, 105830, 131452, 164315, 211660, 328630, 624397, 657260, 1248794, 2497588, 3121985, 6243970, 12487940]

約数ペア:

[(1, 12487940), (2, 6243970), (4, 3121985), (5, 2497588), (10, 1248794), (19, 657260), (20, 624397), (38, 328630), (59, 211660), (76, 164315), (95, 131452), (118, 105830), (190, 65726), (236, 52915), (295, 42332), (380, 32863), (557, 22420), (590, 21166), (1114, 11210), (1121, 11140), (1180, 10583), (2228, 5605), (2242, 5570), (2785, 4484)]