18987228

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1399}}^1$

素因数の和:1451

約数の個数: 72

約数和(自身を含む): 53508000

約数和(自身を除く): 34520772

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 29, 36, 39, 52, 58, 78, 87, 116, 117, 156, 174, 234, 261, 348, 377, 468, 522, 754, 1044, 1131, 1399, 1508, 2262, 2798, 3393, 4197, 4524, 5596, 6786, 8394, 12591, 13572, 16788, 18187, 25182, 36374, 40571, 50364, 54561, 72748, 81142, 109122, 121713, 162284, 163683, 218244, 243426, 327366, 365139, 486852, 527423, 654732, 730278, 1054846, 1460556, 1582269, 2109692, 3164538, 4746807, 6329076, 9493614, 18987228]

約数ペア:

[(1, 18987228), (2, 9493614), (3, 6329076), (4, 4746807), (6, 3164538), (9, 2109692), (12, 1582269), (13, 1460556), (18, 1054846), (26, 730278), (29, 654732), (36, 527423), (39, 486852), (52, 365139), (58, 327366), (78, 243426), (87, 218244), (116, 163683), (117, 162284), (156, 121713), (174, 109122), (234, 81142), (261, 72748), (348, 54561), (377, 50364), (468, 40571), (522, 36374), (754, 25182), (1044, 18187), (1131, 16788), (1399, 13572), (1508, 12591), (2262, 8394), (2798, 6786), (3393, 5596), (4197, 4524)]