21530412

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{503}}^1$

素因数の和:583

約数の個数: 72

約数和(自身を含む): 57788640

約数和(自身を除く): 36258228

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 41, 58, 82, 87, 116, 123, 164, 174, 246, 261, 348, 369, 492, 503, 522, 738, 1006, 1044, 1189, 1476, 1509, 2012, 2378, 3018, 3567, 4527, 4756, 6036, 7134, 9054, 10701, 14268, 14587, 18108, 20623, 21402, 29174, 41246, 42804, 43761, 58348, 61869, 82492, 87522, 123738, 131283, 175044, 185607, 247476, 262566, 371214, 525132, 598067, 742428, 1196134, 1794201, 2392268, 3588402, 5382603, 7176804, 10765206, 21530412]

約数ペア:

[(1, 21530412), (2, 10765206), (3, 7176804), (4, 5382603), (6, 3588402), (9, 2392268), (12, 1794201), (18, 1196134), (29, 742428), (36, 598067), (41, 525132), (58, 371214), (82, 262566), (87, 247476), (116, 185607), (123, 175044), (164, 131283), (174, 123738), (246, 87522), (261, 82492), (348, 61869), (369, 58348), (492, 43761), (503, 42804), (522, 41246), (738, 29174), (1006, 21402), (1044, 20623), (1189, 18108), (1476, 14587), (1509, 14268), (2012, 10701), (2378, 9054), (3018, 7134), (3567, 6036), (4527, 4756)]