18659914

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 37691136

約数和(自身を除く): 19031222

約数列:

[1, 2, 7, 13, 14, 17, 26, 34, 37, 74, 91, 119, 163, 182, 221, 238, 259, 326, 442, 481, 518, 629, 962, 1141, 1258, 1547, 2119, 2282, 2771, 3094, 3367, 4238, 4403, 5542, 6031, 6734, 8177, 8806, 12062, 14833, 16354, 19397, 29666, 36023, 38794, 42217, 57239, 72046, 78403, 84434, 102527, 114478, 156806, 205054, 252161, 504322, 548821, 717689, 1097642, 1332851, 1435378, 2665702, 9329957, 18659914]

約数ペア:

[(1, 18659914), (2, 9329957), (7, 2665702), (13, 1435378), (14, 1332851), (17, 1097642), (26, 717689), (34, 548821), (37, 504322), (74, 252161), (91, 205054), (119, 156806), (163, 114478), (182, 102527), (221, 84434), (238, 78403), (259, 72046), (326, 57239), (442, 42217), (481, 38794), (518, 36023), (629, 29666), (962, 19397), (1141, 16354), (1258, 14833), (1547, 12062), (2119, 8806), (2282, 8177), (2771, 6734), (3094, 6031), (3367, 5542), (4238, 4403)]