20819700

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{701}}^1$

素因数の和:735

約数の個数: 144

約数和(自身を含む): 73120320

約数和(自身を除く): 52300620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 25, 27, 30, 33, 36, 44, 45, 50, 54, 55, 60, 66, 75, 90, 99, 100, 108, 110, 132, 135, 150, 165, 180, 198, 220, 225, 270, 275, 297, 300, 330, 396, 450, 495, 540, 550, 594, 660, 675, 701, 825, 900, 990, 1100, 1188, 1350, 1402, 1485, 1650, 1980, 2103, 2475, 2700, 2804, 2970, 3300, 3505, 4206, 4950, 5940, 6309, 7010, 7425, 7711, 8412, 9900, 10515, 12618, 14020, 14850, 15422, 17525, 18927, 21030, 23133, 25236, 29700, 30844, 31545, 35050, 37854, 38555, 42060, 46266, 52575, 63090, 69399, 70100, 75708, 77110, 92532, 94635, 105150, 115665, 126180, 138798, 154220, 157725, 189270, 192775, 208197, 210300, 231330, 277596, 315450, 346995, 378540, 385550, 416394, 462660, 473175, 578325, 630900, 693990, 771100, 832788, 946350, 1040985, 1156650, 1387980, 1734975, 1892700, 2081970, 2313300, 3469950, 4163940, 5204925, 6939900, 10409850, 20819700]

約数ペア:

[(1, 20819700), (2, 10409850), (3, 6939900), (4, 5204925), (5, 4163940), (6, 3469950), (9, 2313300), (10, 2081970), (11, 1892700), (12, 1734975), (15, 1387980), (18, 1156650), (20, 1040985), (22, 946350), (25, 832788), (27, 771100), (30, 693990), (33, 630900), (36, 578325), (44, 473175), (45, 462660), (50, 416394), (54, 385550), (55, 378540), (60, 346995), (66, 315450), (75, 277596), (90, 231330), (99, 210300), (100, 208197), (108, 192775), (110, 189270), (132, 157725), (135, 154220), (150, 138798), (165, 126180), (180, 115665), (198, 105150), (220, 94635), (225, 92532), (270, 77110), (275, 75708), (297, 70100), (300, 69399), (330, 63090), (396, 52575), (450, 46266), (495, 42060), (540, 38555), (550, 37854), (594, 35050), (660, 31545), (675, 30844), (701, 29700), (825, 25236), (900, 23133), (990, 21030), (1100, 18927), (1188, 17525), (1350, 15422), (1402, 14850), (1485, 14020), (1650, 12618), (1980, 10515), (2103, 9900), (2475, 8412), (2700, 7711), (2804, 7425), (2970, 7010), (3300, 6309), (3505, 5940), (4206, 4950)]