78137740

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 168204960

約数和(自身を除く): 90067220

約数列:

[1, 2, 4, 5, 10, 20, 73, 109, 146, 218, 292, 365, 436, 491, 545, 730, 982, 1090, 1460, 1964, 2180, 2455, 4910, 7957, 9820, 15914, 31828, 35843, 39785, 53519, 71686, 79570, 107038, 143372, 159140, 179215, 214076, 267595, 358430, 535190, 716860, 1070380, 3906887, 7813774, 15627548, 19534435, 39068870, 78137740]

約数ペア:

[(1, 78137740), (2, 39068870), (4, 19534435), (5, 15627548), (10, 7813774), (20, 3906887), (73, 1070380), (109, 716860), (146, 535190), (218, 358430), (292, 267595), (365, 214076), (436, 179215), (491, 159140), (545, 143372), (730, 107038), (982, 79570), (1090, 71686), (1460, 53519), (1964, 39785), (2180, 35843), (2455, 31828), (4910, 15914), (7957, 9820)]