20203749

素因数分解:

$3^5\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:152

約数の個数: 48

約数和(自身を含む): 32497920

約数和(自身を除く): 12294171

約数列:

[1, 3, 9, 27, 29, 47, 61, 81, 87, 141, 183, 243, 261, 423, 549, 783, 1269, 1363, 1647, 1769, 2349, 2867, 3807, 4089, 4941, 5307, 7047, 8601, 11421, 12267, 14823, 15921, 25803, 36801, 47763, 77409, 83143, 110403, 143289, 232227, 249429, 331209, 429867, 696681, 748287, 2244861, 6734583, 20203749]

約数ペア:

[(1, 20203749), (3, 6734583), (9, 2244861), (27, 748287), (29, 696681), (47, 429867), (61, 331209), (81, 249429), (87, 232227), (141, 143289), (183, 110403), (243, 83143), (261, 77409), (423, 47763), (549, 36801), (783, 25803), (1269, 15921), (1363, 14823), (1647, 12267), (1769, 11421), (2349, 8601), (2867, 7047), (3807, 5307), (4089, 4941)]