21865428

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2459}}^1$

素因数の和:2501

約数の個数: 72

約数和(自身を含む): 62680800

約数和(自身を除く): 40815372

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2459, 2964, 4446, 4918, 7377, 8892, 9836, 14754, 22131, 29508, 31967, 44262, 46721, 63934, 88524, 93442, 95901, 127868, 140163, 186884, 191802, 280326, 287703, 383604, 420489, 560652, 575406, 607373, 840978, 1150812, 1214746, 1681956, 1822119, 2429492, 3644238, 5466357, 7288476, 10932714, 21865428]

約数ペア:

[(1, 21865428), (2, 10932714), (3, 7288476), (4, 5466357), (6, 3644238), (9, 2429492), (12, 1822119), (13, 1681956), (18, 1214746), (19, 1150812), (26, 840978), (36, 607373), (38, 575406), (39, 560652), (52, 420489), (57, 383604), (76, 287703), (78, 280326), (114, 191802), (117, 186884), (156, 140163), (171, 127868), (228, 95901), (234, 93442), (247, 88524), (342, 63934), (468, 46721), (494, 44262), (684, 31967), (741, 29508), (988, 22131), (1482, 14754), (2223, 9836), (2459, 8892), (2964, 7377), (4446, 4918)]