20498100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:294

約数の個数: 144

約数和(自身を含む): 69662208

約数和(自身を除く): 49164108

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 43, 50, 60, 70, 75, 84, 86, 100, 105, 129, 140, 150, 172, 175, 210, 215, 227, 258, 300, 301, 350, 420, 430, 454, 516, 525, 602, 645, 681, 700, 860, 903, 908, 1050, 1075, 1135, 1204, 1290, 1362, 1505, 1589, 1806, 2100, 2150, 2270, 2580, 2724, 3010, 3178, 3225, 3405, 3612, 4300, 4515, 4540, 4767, 5675, 6020, 6356, 6450, 6810, 7525, 7945, 9030, 9534, 9761, 11350, 12900, 13620, 15050, 15890, 17025, 18060, 19068, 19522, 22575, 22700, 23835, 29283, 30100, 31780, 34050, 39044, 39725, 45150, 47670, 48805, 58566, 68100, 68327, 79450, 90300, 95340, 97610, 117132, 119175, 136654, 146415, 158900, 195220, 204981, 238350, 244025, 273308, 292830, 341635, 409962, 476700, 488050, 585660, 683270, 732075, 819924, 976100, 1024905, 1366540, 1464150, 1708175, 2049810, 2928300, 3416350, 4099620, 5124525, 6832700, 10249050, 20498100]

約数ペア:

[(1, 20498100), (2, 10249050), (3, 6832700), (4, 5124525), (5, 4099620), (6, 3416350), (7, 2928300), (10, 2049810), (12, 1708175), (14, 1464150), (15, 1366540), (20, 1024905), (21, 976100), (25, 819924), (28, 732075), (30, 683270), (35, 585660), (42, 488050), (43, 476700), (50, 409962), (60, 341635), (70, 292830), (75, 273308), (84, 244025), (86, 238350), (100, 204981), (105, 195220), (129, 158900), (140, 146415), (150, 136654), (172, 119175), (175, 117132), (210, 97610), (215, 95340), (227, 90300), (258, 79450), (300, 68327), (301, 68100), (350, 58566), (420, 48805), (430, 47670), (454, 45150), (516, 39725), (525, 39044), (602, 34050), (645, 31780), (681, 30100), (700, 29283), (860, 23835), (903, 22700), (908, 22575), (1050, 19522), (1075, 19068), (1135, 18060), (1204, 17025), (1290, 15890), (1362, 15050), (1505, 13620), (1589, 12900), (1806, 11350), (2100, 9761), (2150, 9534), (2270, 9030), (2580, 7945), (2724, 7525), (3010, 6810), (3178, 6450), (3225, 6356), (3405, 6020), (3612, 5675), (4300, 4767), (4515, 4540)]