20565723880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{7681}}^1$

素因数の和:7995

約数の個数: 128

約数和(自身を含む): 52655500800

約数和(自身を除く): 32089776920

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 271, 380, 494, 520, 542, 760, 988, 1084, 1235, 1355, 1976, 2168, 2470, 2710, 3523, 4940, 5149, 5420, 7046, 7681, 9880, 10298, 10840, 14092, 15362, 17615, 20596, 25745, 28184, 30724, 35230, 38405, 41192, 51490, 61448, 66937, 70460, 76810, 99853, 102980, 133874, 140920, 145939, 153620, 199706, 205960, 267748, 291878, 307240, 334685, 399412, 499265, 535496, 583756, 669370, 729695, 798824, 998530, 1167512, 1338740, 1459390, 1897207, 1997060, 2081551, 2677480, 2918780, 3794414, 3994120, 4163102, 5837560, 7588828, 8326204, 9486035, 10407755, 15177656, 16652408, 18972070, 20815510, 27060163, 37944140, 39549469, 41631020, 54120326, 75888280, 79098938, 83262040, 108240652, 135300815, 158197876, 197747345, 216481304, 270601630, 316395752, 395494690, 514143097, 541203260, 790989380, 1028286194, 1082406520, 1581978760, 2056572388, 2570715485, 4113144776, 5141430970, 10282861940, 20565723880]

約数ペア:

[(1, 20565723880), (2, 10282861940), (4, 5141430970), (5, 4113144776), (8, 2570715485), (10, 2056572388), (13, 1581978760), (19, 1082406520), (20, 1028286194), (26, 790989380), (38, 541203260), (40, 514143097), (52, 395494690), (65, 316395752), (76, 270601630), (95, 216481304), (104, 197747345), (130, 158197876), (152, 135300815), (190, 108240652), (247, 83262040), (260, 79098938), (271, 75888280), (380, 54120326), (494, 41631020), (520, 39549469), (542, 37944140), (760, 27060163), (988, 20815510), (1084, 18972070), (1235, 16652408), (1355, 15177656), (1976, 10407755), (2168, 9486035), (2470, 8326204), (2710, 7588828), (3523, 5837560), (4940, 4163102), (5149, 3994120), (5420, 3794414), (7046, 2918780), (7681, 2677480), (9880, 2081551), (10298, 1997060), (10840, 1897207), (14092, 1459390), (15362, 1338740), (17615, 1167512), (20596, 998530), (25745, 798824), (28184, 729695), (30724, 669370), (35230, 583756), (38405, 535496), (41192, 499265), (51490, 399412), (61448, 334685), (66937, 307240), (70460, 291878), (76810, 267748), (99853, 205960), (102980, 199706), (133874, 153620), (140920, 145939)]