21284560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1$

素因数の和:129

約数の個数: 120

約数和(自身を含む): 57826656

約数和(自身を除く): 36542096

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 67, 76, 80, 88, 95, 110, 134, 152, 176, 190, 209, 220, 268, 304, 335, 361, 380, 418, 440, 536, 670, 722, 737, 760, 836, 880, 1045, 1072, 1273, 1340, 1444, 1474, 1520, 1672, 1805, 2090, 2546, 2680, 2888, 2948, 3344, 3610, 3685, 3971, 4180, 5092, 5360, 5776, 5896, 6365, 7220, 7370, 7942, 8360, 10184, 11792, 12730, 14003, 14440, 14740, 15884, 16720, 19855, 20368, 24187, 25460, 28006, 28880, 29480, 31768, 39710, 48374, 50920, 56012, 58960, 63536, 70015, 79420, 96748, 101840, 112024, 120935, 140030, 158840, 193496, 224048, 241870, 266057, 280060, 317680, 386992, 483740, 532114, 560120, 967480, 1064228, 1120240, 1330285, 1934960, 2128456, 2660570, 4256912, 5321140, 10642280, 21284560]

約数ペア:

[(1, 21284560), (2, 10642280), (4, 5321140), (5, 4256912), (8, 2660570), (10, 2128456), (11, 1934960), (16, 1330285), (19, 1120240), (20, 1064228), (22, 967480), (38, 560120), (40, 532114), (44, 483740), (55, 386992), (67, 317680), (76, 280060), (80, 266057), (88, 241870), (95, 224048), (110, 193496), (134, 158840), (152, 140030), (176, 120935), (190, 112024), (209, 101840), (220, 96748), (268, 79420), (304, 70015), (335, 63536), (361, 58960), (380, 56012), (418, 50920), (440, 48374), (536, 39710), (670, 31768), (722, 29480), (737, 28880), (760, 28006), (836, 25460), (880, 24187), (1045, 20368), (1072, 19855), (1273, 16720), (1340, 15884), (1444, 14740), (1474, 14440), (1520, 14003), (1672, 12730), (1805, 11792), (2090, 10184), (2546, 8360), (2680, 7942), (2888, 7370), (2948, 7220), (3344, 6365), (3610, 5896), (3685, 5776), (3971, 5360), (4180, 5092)]