21576780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{701}}^1$

素因数の和:741

約数の個数: 120

約数和(自身を含む): 71351280

約数和(自身を除く): 49774500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 684, 701, 810, 855, 1026, 1140, 1402, 1539, 1620, 1710, 2052, 2103, 2565, 2804, 3078, 3420, 3505, 4206, 5130, 6156, 6309, 7010, 7695, 8412, 10260, 10515, 12618, 13319, 14020, 15390, 18927, 21030, 25236, 26638, 30780, 31545, 37854, 39957, 42060, 53276, 56781, 63090, 66595, 75708, 79914, 94635, 113562, 119871, 126180, 133190, 159828, 189270, 199785, 227124, 239742, 266380, 283905, 359613, 378540, 399570, 479484, 567810, 599355, 719226, 799140, 1078839, 1135620, 1198710, 1438452, 1798065, 2157678, 2397420, 3596130, 4315356, 5394195, 7192260, 10788390, 21576780]

約数ペア:

[(1, 21576780), (2, 10788390), (3, 7192260), (4, 5394195), (5, 4315356), (6, 3596130), (9, 2397420), (10, 2157678), (12, 1798065), (15, 1438452), (18, 1198710), (19, 1135620), (20, 1078839), (27, 799140), (30, 719226), (36, 599355), (38, 567810), (45, 479484), (54, 399570), (57, 378540), (60, 359613), (76, 283905), (81, 266380), (90, 239742), (95, 227124), (108, 199785), (114, 189270), (135, 159828), (162, 133190), (171, 126180), (180, 119871), (190, 113562), (228, 94635), (270, 79914), (285, 75708), (324, 66595), (342, 63090), (380, 56781), (405, 53276), (513, 42060), (540, 39957), (570, 37854), (684, 31545), (701, 30780), (810, 26638), (855, 25236), (1026, 21030), (1140, 18927), (1402, 15390), (1539, 14020), (1620, 13319), (1710, 12618), (2052, 10515), (2103, 10260), (2565, 8412), (2804, 7695), (3078, 7010), (3420, 6309), (3505, 6156), (4206, 5130)]