20648480

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:250

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 32186848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 80, 92, 115, 124, 155, 160, 181, 184, 230, 248, 310, 362, 368, 460, 496, 620, 713, 724, 736, 905, 920, 992, 1240, 1426, 1448, 1810, 1840, 2480, 2852, 2896, 3565, 3620, 3680, 4163, 4960, 5611, 5704, 5792, 7130, 7240, 8326, 11222, 11408, 14260, 14480, 16652, 20815, 22444, 22816, 28055, 28520, 28960, 33304, 41630, 44888, 56110, 57040, 66608, 83260, 89776, 112220, 114080, 129053, 133216, 166520, 179552, 224440, 258106, 333040, 448880, 516212, 645265, 666080, 897760, 1032424, 1290530, 2064848, 2581060, 4129696, 5162120, 10324240, 20648480]

約数ペア:

[(1, 20648480), (2, 10324240), (4, 5162120), (5, 4129696), (8, 2581060), (10, 2064848), (16, 1290530), (20, 1032424), (23, 897760), (31, 666080), (32, 645265), (40, 516212), (46, 448880), (62, 333040), (80, 258106), (92, 224440), (115, 179552), (124, 166520), (155, 133216), (160, 129053), (181, 114080), (184, 112220), (230, 89776), (248, 83260), (310, 66608), (362, 57040), (368, 56110), (460, 44888), (496, 41630), (620, 33304), (713, 28960), (724, 28520), (736, 28055), (905, 22816), (920, 22444), (992, 20815), (1240, 16652), (1426, 14480), (1448, 14260), (1810, 11408), (1840, 11222), (2480, 8326), (2852, 7240), (2896, 7130), (3565, 5792), (3620, 5704), (3680, 5611), (4163, 4960)]