21158748

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1559}}^1$

素因数の和:1611

約数の個数: 72

約数和(自身を含む): 59623200

約数和(自身を除く): 38464452

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, 1508, 1559, 2262, 3118, 3393, 4524, 4677, 6236, 6786, 9354, 13572, 14031, 18708, 20267, 28062, 40534, 45211, 56124, 60801, 81068, 90422, 121602, 135633, 180844, 182403, 243204, 271266, 364806, 406899, 542532, 587743, 729612, 813798, 1175486, 1627596, 1763229, 2350972, 3526458, 5289687, 7052916, 10579374, 21158748]

約数ペア:

[(1, 21158748), (2, 10579374), (3, 7052916), (4, 5289687), (6, 3526458), (9, 2350972), (12, 1763229), (13, 1627596), (18, 1175486), (26, 813798), (29, 729612), (36, 587743), (39, 542532), (52, 406899), (58, 364806), (78, 271266), (87, 243204), (116, 182403), (117, 180844), (156, 135633), (174, 121602), (234, 90422), (261, 81068), (348, 60801), (377, 56124), (468, 45211), (522, 40534), (754, 28062), (1044, 20267), (1131, 18708), (1508, 14031), (1559, 13572), (2262, 9354), (3118, 6786), (3393, 6236), (4524, 4677)]