636851817

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 1109554368

約数和(自身を除く): 472702551

約数列:

[1, 3, 7, 9, 21, 31, 63, 67, 93, 157, 201, 217, 279, 469, 471, 603, 651, 961, 1099, 1407, 1413, 1953, 2077, 2883, 3297, 4221, 4867, 6231, 6727, 8649, 9891, 10519, 14539, 14601, 18693, 20181, 31557, 34069, 43617, 43803, 60543, 64387, 73633, 94671, 102207, 130851, 150877, 193161, 220899, 306621, 326089, 450709, 452631, 579483, 662697, 978267, 1056139, 1352127, 1357893, 2282623, 2934801, 3168417, 4056381, 6847869, 9505251, 10108759, 20543607, 30326277, 70761313, 90978831, 212283939, 636851817]

約数ペア:

[(1, 636851817), (3, 212283939), (7, 90978831), (9, 70761313), (21, 30326277), (31, 20543607), (63, 10108759), (67, 9505251), (93, 6847869), (157, 4056381), (201, 3168417), (217, 2934801), (279, 2282623), (469, 1357893), (471, 1352127), (603, 1056139), (651, 978267), (961, 662697), (1099, 579483), (1407, 452631), (1413, 450709), (1953, 326089), (2077, 306621), (2883, 220899), (3297, 193161), (4221, 150877), (4867, 130851), (6231, 102207), (6727, 94671), (8649, 73633), (9891, 64387), (10519, 60543), (14539, 43803), (14601, 43617), (18693, 34069), (20181, 31557)]