18978872

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{11351}}^1$

素因数の和:11387

約数の個数: 32

約数和(自身を含む): 40867200

約数和(自身を除く): 21888328

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 11351, 22702, 45404, 90808, 124861, 215669, 249722, 431338, 499444, 862676, 998888, 1725352, 2372359, 4744718, 9489436, 18978872]

約数ペア:

[(1, 18978872), (2, 9489436), (4, 4744718), (8, 2372359), (11, 1725352), (19, 998888), (22, 862676), (38, 499444), (44, 431338), (76, 249722), (88, 215669), (152, 124861), (209, 90808), (418, 45404), (836, 22702), (1672, 11351)]