638435516

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{73}}^2\times {\mathrm{491}}^1$

素因数の和:702

約数の個数: 36

約数和(自身を含む): 1153691784

約数和(自身を除く): 515256268

約数列:

[1, 2, 4, 61, 73, 122, 146, 244, 292, 491, 982, 1964, 4453, 5329, 8906, 10658, 17812, 21316, 29951, 35843, 59902, 71686, 119804, 143372, 325069, 650138, 1300276, 2186423, 2616539, 4372846, 5233078, 8745692, 10466156, 159608879, 319217758, 638435516]

約数ペア:

[(1, 638435516), (2, 319217758), (4, 159608879), (61, 10466156), (73, 8745692), (122, 5233078), (146, 4372846), (244, 2616539), (292, 2186423), (491, 1300276), (982, 650138), (1964, 325069), (4453, 143372), (5329, 119804), (8906, 71686), (10658, 59902), (17812, 35843), (21316, 29951)]