257495714

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 479001600

約数和(自身を除く): 221505886

約数列:

[1, 2, 7, 14, 19, 38, 83, 107, 109, 133, 166, 214, 218, 266, 581, 749, 763, 1162, 1498, 1526, 1577, 2033, 2071, 3154, 4066, 4142, 8881, 9047, 11039, 11663, 14231, 14497, 17762, 18094, 22078, 23326, 28462, 28994, 62167, 63329, 81641, 124334, 126658, 163282, 168739, 171893, 221597, 337478, 343786, 443194, 968029, 1181173, 1203251, 1551179, 1936058, 2362346, 2406502, 3102358, 6776203, 13552406, 18392551, 36785102, 128747857, 257495714]

約数ペア:

[(1, 257495714), (2, 128747857), (7, 36785102), (14, 18392551), (19, 13552406), (38, 6776203), (83, 3102358), (107, 2406502), (109, 2362346), (133, 1936058), (166, 1551179), (214, 1203251), (218, 1181173), (266, 968029), (581, 443194), (749, 343786), (763, 337478), (1162, 221597), (1498, 171893), (1526, 168739), (1577, 163282), (2033, 126658), (2071, 124334), (3154, 81641), (4066, 63329), (4142, 62167), (8881, 28994), (9047, 28462), (11039, 23326), (11663, 22078), (14231, 18094), (14497, 17762)]