21012742720

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{727}}^1\times {\mathrm{2203}}^1$

素因数の和:2988

約数の個数: 112

約数和(自身を含む): 51350802048

約数和(自身を除く): 30338059328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 727, 820, 1312, 1454, 1640, 2203, 2624, 2908, 3280, 3635, 4406, 5816, 6560, 7270, 8812, 11015, 11632, 13120, 14540, 17624, 22030, 23264, 29080, 29807, 35248, 44060, 46528, 58160, 59614, 70496, 88120, 90323, 116320, 119228, 140992, 149035, 176240, 180646, 232640, 238456, 298070, 352480, 361292, 451615, 476912, 596140, 704960, 722584, 903230, 953824, 1192280, 1445168, 1601581, 1806460, 1907648, 2384560, 2890336, 3203162, 3612920, 4769120, 5780672, 6406324, 7225840, 8007905, 9538240, 12812648, 14451680, 16015810, 25625296, 28903360, 32031620, 51250592, 64063240, 65664821, 102501184, 128126480, 131329642, 256252960, 262659284, 328324105, 512505920, 525318568, 656648210, 1050637136, 1313296420, 2101274272, 2626592840, 4202548544, 5253185680, 10506371360, 21012742720]

約数ペア:

[(1, 21012742720), (2, 10506371360), (4, 5253185680), (5, 4202548544), (8, 2626592840), (10, 2101274272), (16, 1313296420), (20, 1050637136), (32, 656648210), (40, 525318568), (41, 512505920), (64, 328324105), (80, 262659284), (82, 256252960), (160, 131329642), (164, 128126480), (205, 102501184), (320, 65664821), (328, 64063240), (410, 51250592), (656, 32031620), (727, 28903360), (820, 25625296), (1312, 16015810), (1454, 14451680), (1640, 12812648), (2203, 9538240), (2624, 8007905), (2908, 7225840), (3280, 6406324), (3635, 5780672), (4406, 4769120), (5816, 3612920), (6560, 3203162), (7270, 2890336), (8812, 2384560), (11015, 1907648), (11632, 1806460), (13120, 1601581), (14540, 1445168), (17624, 1192280), (22030, 953824), (23264, 903230), (29080, 722584), (29807, 704960), (35248, 596140), (44060, 476912), (46528, 451615), (58160, 361292), (59614, 352480), (70496, 298070), (88120, 238456), (90323, 232640), (116320, 180646), (119228, 176240), (140992, 149035)]