21994872

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:141

約数の個数: 128

約数和(自身を含む): 63037440

約数和(自身を除く): 41042568

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 31, 34, 37, 47, 51, 62, 68, 74, 93, 94, 102, 111, 124, 136, 141, 148, 186, 188, 204, 222, 248, 282, 296, 372, 376, 408, 444, 527, 564, 629, 744, 799, 888, 1054, 1128, 1147, 1258, 1457, 1581, 1598, 1739, 1887, 2108, 2294, 2397, 2516, 2914, 3162, 3196, 3441, 3478, 3774, 4216, 4371, 4588, 4794, 5032, 5217, 5828, 6324, 6392, 6882, 6956, 7548, 8742, 9176, 9588, 10434, 11656, 12648, 13764, 13912, 15096, 17484, 19176, 19499, 20868, 24769, 27528, 29563, 34968, 38998, 41736, 49538, 53909, 58497, 59126, 74307, 77996, 88689, 99076, 107818, 116994, 118252, 148614, 155992, 161727, 177378, 198152, 215636, 233988, 236504, 297228, 323454, 354756, 431272, 467976, 594456, 646908, 709512, 916453, 1293816, 1832906, 2749359, 3665812, 5498718, 7331624, 10997436, 21994872]

約数ペア:

[(1, 21994872), (2, 10997436), (3, 7331624), (4, 5498718), (6, 3665812), (8, 2749359), (12, 1832906), (17, 1293816), (24, 916453), (31, 709512), (34, 646908), (37, 594456), (47, 467976), (51, 431272), (62, 354756), (68, 323454), (74, 297228), (93, 236504), (94, 233988), (102, 215636), (111, 198152), (124, 177378), (136, 161727), (141, 155992), (148, 148614), (186, 118252), (188, 116994), (204, 107818), (222, 99076), (248, 88689), (282, 77996), (296, 74307), (372, 59126), (376, 58497), (408, 53909), (444, 49538), (527, 41736), (564, 38998), (629, 34968), (744, 29563), (799, 27528), (888, 24769), (1054, 20868), (1128, 19499), (1147, 19176), (1258, 17484), (1457, 15096), (1581, 13912), (1598, 13764), (1739, 12648), (1887, 11656), (2108, 10434), (2294, 9588), (2397, 9176), (2516, 8742), (2914, 7548), (3162, 6956), (3196, 6882), (3441, 6392), (3478, 6324), (3774, 5828), (4216, 5217), (4371, 5032), (4588, 4794)]