278315990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{21863}}^1$

素因数の和:21956

約数の個数: 32

約数和(自身を含む): 535230720

約数和(自身を除く): 256914730

約数列:

[1, 2, 5, 10, 19, 38, 67, 95, 134, 190, 335, 670, 1273, 2546, 6365, 12730, 21863, 43726, 109315, 218630, 415397, 830794, 1464821, 2076985, 2929642, 4153970, 7324105, 14648210, 27831599, 55663198, 139157995, 278315990]

約数ペア:

[(1, 278315990), (2, 139157995), (5, 55663198), (10, 27831599), (19, 14648210), (38, 7324105), (67, 4153970), (95, 2929642), (134, 2076985), (190, 1464821), (335, 830794), (670, 415397), (1273, 218630), (2546, 109315), (6365, 43726), (12730, 21863)]