21000295704

素因数分解:

$2^3\times 3^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{389}}^1\times {\mathrm{431}}^1$

素因数の和:1153

約数の個数: 128

約数和(自身を含む): 56043187200

約数和(自身を除く): 35042891496

約数列:

[1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 307, 389, 408, 431, 614, 778, 862, 921, 1167, 1228, 1293, 1556, 1724, 1842, 2334, 2456, 2586, 3112, 3448, 3684, 4668, 5172, 5219, 6613, 7327, 7368, 9336, 10344, 10438, 13226, 14654, 15657, 19839, 20876, 21981, 26452, 29308, 31314, 39678, 41752, 43962, 52904, 58616, 62628, 79356, 87924, 119423, 125256, 132317, 158712, 167659, 175848, 238846, 264634, 335318, 358269, 396951, 477692, 502977, 529268, 670636, 716538, 793902, 955384, 1005954, 1058536, 1341272, 1433076, 1587804, 2011908, 2030191, 2249389, 2850203, 2866152, 3175608, 4023816, 4060382, 4498778, 5700406, 6090573, 6748167, 8120764, 8550609, 8997556, 11400812, 12181146, 13496334, 16241528, 17101218, 17995112, 22801624, 24362292, 26992668, 34202436, 48724584, 51471313, 53985336, 68404872, 102942626, 154413939, 205885252, 308827878, 411770504, 617655756, 875012321, 1235311512, 1750024642, 2625036963, 3500049284, 5250073926, 7000098568, 10500147852, 21000295704]

約数ペア:

[(1, 21000295704), (2, 10500147852), (3, 7000098568), (4, 5250073926), (6, 3500049284), (8, 2625036963), (12, 1750024642), (17, 1235311512), (24, 875012321), (34, 617655756), (51, 411770504), (68, 308827878), (102, 205885252), (136, 154413939), (204, 102942626), (307, 68404872), (389, 53985336), (408, 51471313), (431, 48724584), (614, 34202436), (778, 26992668), (862, 24362292), (921, 22801624), (1167, 17995112), (1228, 17101218), (1293, 16241528), (1556, 13496334), (1724, 12181146), (1842, 11400812), (2334, 8997556), (2456, 8550609), (2586, 8120764), (3112, 6748167), (3448, 6090573), (3684, 5700406), (4668, 4498778), (5172, 4060382), (5219, 4023816), (6613, 3175608), (7327, 2866152), (7368, 2850203), (9336, 2249389), (10344, 2030191), (10438, 2011908), (13226, 1587804), (14654, 1433076), (15657, 1341272), (19839, 1058536), (20876, 1005954), (21981, 955384), (26452, 793902), (29308, 716538), (31314, 670636), (39678, 529268), (41752, 502977), (43962, 477692), (52904, 396951), (58616, 358269), (62628, 335318), (79356, 264634), (87924, 238846), (119423, 175848), (125256, 167659), (132317, 158712)]