20126473900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{4999}}^1$

素因数の和:5208

約数の個数: 144

約数和(自身を含む): 49823200000

約数和(自身を除く): 29696726100

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 163, 190, 247, 260, 325, 326, 380, 475, 494, 650, 652, 815, 950, 988, 1235, 1300, 1630, 1900, 2119, 2470, 3097, 3260, 4075, 4238, 4940, 4999, 6175, 6194, 8150, 8476, 9998, 10595, 12350, 12388, 15485, 16300, 19996, 21190, 24700, 24995, 30970, 40261, 42380, 49990, 52975, 61940, 64987, 77425, 80522, 94981, 99980, 105950, 124975, 129974, 154850, 161044, 189962, 201305, 211900, 249950, 259948, 309700, 324935, 379924, 402610, 474905, 499900, 649870, 805220, 814837, 949810, 1006525, 1234753, 1299740, 1624675, 1629674, 1899620, 2013050, 2374525, 2469506, 3249350, 3259348, 4026100, 4074185, 4749050, 4939012, 6173765, 6498700, 8148370, 9498100, 10592881, 12347530, 15481903, 16296740, 20370925, 21185762, 24695060, 30868825, 30963806, 40741850, 42371524, 52964405, 61737650, 61927612, 77409515, 81483700, 105928810, 123475300, 154819030, 201264739, 211857620, 264822025, 309638060, 387047575, 402529478, 529644050, 774095150, 805058956, 1006323695, 1059288100, 1548190300, 2012647390, 4025294780, 5031618475, 10063236950, 20126473900]

約数ペア:

[(1, 20126473900), (2, 10063236950), (4, 5031618475), (5, 4025294780), (10, 2012647390), (13, 1548190300), (19, 1059288100), (20, 1006323695), (25, 805058956), (26, 774095150), (38, 529644050), (50, 402529478), (52, 387047575), (65, 309638060), (76, 264822025), (95, 211857620), (100, 201264739), (130, 154819030), (163, 123475300), (190, 105928810), (247, 81483700), (260, 77409515), (325, 61927612), (326, 61737650), (380, 52964405), (475, 42371524), (494, 40741850), (650, 30963806), (652, 30868825), (815, 24695060), (950, 21185762), (988, 20370925), (1235, 16296740), (1300, 15481903), (1630, 12347530), (1900, 10592881), (2119, 9498100), (2470, 8148370), (3097, 6498700), (3260, 6173765), (4075, 4939012), (4238, 4749050), (4940, 4074185), (4999, 4026100), (6175, 3259348), (6194, 3249350), (8150, 2469506), (8476, 2374525), (9998, 2013050), (10595, 1899620), (12350, 1629674), (12388, 1624675), (15485, 1299740), (16300, 1234753), (19996, 1006525), (21190, 949810), (24700, 814837), (24995, 805220), (30970, 649870), (40261, 499900), (42380, 474905), (49990, 402610), (52975, 379924), (61940, 324935), (64987, 309700), (77425, 259948), (80522, 249950), (94981, 211900), (99980, 201305), (105950, 189962), (124975, 161044), (129974, 154850)]