20540700

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{787}}^1$

素因数の和:836

約数の個数: 108

約数和(自身を含む): 66688440

約数和(自身を除く): 46147740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 29, 30, 36, 45, 50, 58, 60, 75, 87, 90, 100, 116, 145, 150, 174, 180, 225, 261, 290, 300, 348, 435, 450, 522, 580, 725, 787, 870, 900, 1044, 1305, 1450, 1574, 1740, 2175, 2361, 2610, 2900, 3148, 3935, 4350, 4722, 5220, 6525, 7083, 7870, 8700, 9444, 11805, 13050, 14166, 15740, 19675, 22823, 23610, 26100, 28332, 35415, 39350, 45646, 47220, 59025, 68469, 70830, 78700, 91292, 114115, 118050, 136938, 141660, 177075, 205407, 228230, 236100, 273876, 342345, 354150, 410814, 456460, 570575, 684690, 708300, 821628, 1027035, 1141150, 1369380, 1711725, 2054070, 2282300, 3423450, 4108140, 5135175, 6846900, 10270350, 20540700]

約数ペア:

[(1, 20540700), (2, 10270350), (3, 6846900), (4, 5135175), (5, 4108140), (6, 3423450), (9, 2282300), (10, 2054070), (12, 1711725), (15, 1369380), (18, 1141150), (20, 1027035), (25, 821628), (29, 708300), (30, 684690), (36, 570575), (45, 456460), (50, 410814), (58, 354150), (60, 342345), (75, 273876), (87, 236100), (90, 228230), (100, 205407), (116, 177075), (145, 141660), (150, 136938), (174, 118050), (180, 114115), (225, 91292), (261, 78700), (290, 70830), (300, 68469), (348, 59025), (435, 47220), (450, 45646), (522, 39350), (580, 35415), (725, 28332), (787, 26100), (870, 23610), (900, 22823), (1044, 19675), (1305, 15740), (1450, 14166), (1574, 13050), (1740, 11805), (2175, 9444), (2361, 8700), (2610, 7870), (2900, 7083), (3148, 6525), (3935, 5220), (4350, 4722)]