21700432

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^2$

素因数の和:93

約数の個数: 90

約数和(自身を含む): 50763678

約数和(自身を除く): 29063246

約数列:

[1, 2, 4, 8, 13, 16, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 208, 221, 247, 272, 289, 304, 323, 361, 442, 494, 578, 646, 722, 884, 988, 1156, 1292, 1444, 1768, 1976, 2312, 2584, 2888, 3536, 3757, 3952, 4199, 4624, 4693, 5168, 5491, 5776, 6137, 7514, 8398, 9386, 10982, 12274, 15028, 16796, 18772, 21964, 24548, 30056, 33592, 37544, 43928, 49096, 60112, 67184, 71383, 75088, 79781, 87856, 98192, 104329, 142766, 159562, 208658, 285532, 319124, 417316, 571064, 638248, 834632, 1142128, 1276496, 1356277, 1669264, 2712554, 5425108, 10850216, 21700432]

約数ペア:

[(1, 21700432), (2, 10850216), (4, 5425108), (8, 2712554), (13, 1669264), (16, 1356277), (17, 1276496), (19, 1142128), (26, 834632), (34, 638248), (38, 571064), (52, 417316), (68, 319124), (76, 285532), (104, 208658), (136, 159562), (152, 142766), (208, 104329), (221, 98192), (247, 87856), (272, 79781), (289, 75088), (304, 71383), (323, 67184), (361, 60112), (442, 49096), (494, 43928), (578, 37544), (646, 33592), (722, 30056), (884, 24548), (988, 21964), (1156, 18772), (1292, 16796), (1444, 15028), (1768, 12274), (1976, 10982), (2312, 9386), (2584, 8398), (2888, 7514), (3536, 6137), (3757, 5776), (3952, 5491), (4199, 5168), (4624, 4693)]