1901308720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{8999}}^1$

素因数の和:9170

約数の個数: 80

約数和(自身を含む): 4687200000

約数和(自身を除く): 2785891280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 139, 152, 190, 278, 304, 380, 556, 695, 760, 1112, 1390, 1520, 2224, 2641, 2780, 5282, 5560, 8999, 10564, 11120, 13205, 17998, 21128, 26410, 35996, 42256, 44995, 52820, 71992, 89990, 105640, 143984, 170981, 179980, 211280, 341962, 359960, 683924, 719920, 854905, 1250861, 1367848, 1709810, 2501722, 2735696, 3419620, 5003444, 6254305, 6839240, 10006888, 12508610, 13678480, 20013776, 23766359, 25017220, 47532718, 50034440, 95065436, 100068880, 118831795, 190130872, 237663590, 380261744, 475327180, 950654360, 1901308720]

約数ペア:

[(1, 1901308720), (2, 950654360), (4, 475327180), (5, 380261744), (8, 237663590), (10, 190130872), (16, 118831795), (19, 100068880), (20, 95065436), (38, 50034440), (40, 47532718), (76, 25017220), (80, 23766359), (95, 20013776), (139, 13678480), (152, 12508610), (190, 10006888), (278, 6839240), (304, 6254305), (380, 5003444), (556, 3419620), (695, 2735696), (760, 2501722), (1112, 1709810), (1390, 1367848), (1520, 1250861), (2224, 854905), (2641, 719920), (2780, 683924), (5282, 359960), (5560, 341962), (8999, 211280), (10564, 179980), (11120, 170981), (13205, 143984), (17998, 105640), (21128, 89990), (26410, 71992), (35996, 52820), (42256, 44995)]