20148520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{317}}^1$

素因数の和:562

約数の個数: 64

約数和(自身を含む): 52202880

約数和(自身を除く): 32054360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 227, 280, 317, 454, 634, 908, 1135, 1268, 1585, 1589, 1816, 2219, 2270, 2536, 3170, 3178, 4438, 4540, 6340, 6356, 7945, 8876, 9080, 11095, 12680, 12712, 15890, 17752, 22190, 31780, 44380, 63560, 71959, 88760, 143918, 287836, 359795, 503713, 575672, 719590, 1007426, 1439180, 2014852, 2518565, 2878360, 4029704, 5037130, 10074260, 20148520]

約数ペア:

[(1, 20148520), (2, 10074260), (4, 5037130), (5, 4029704), (7, 2878360), (8, 2518565), (10, 2014852), (14, 1439180), (20, 1007426), (28, 719590), (35, 575672), (40, 503713), (56, 359795), (70, 287836), (140, 143918), (227, 88760), (280, 71959), (317, 63560), (454, 44380), (634, 31780), (908, 22190), (1135, 17752), (1268, 15890), (1585, 12712), (1589, 12680), (1816, 11095), (2219, 9080), (2270, 8876), (2536, 7945), (3170, 6356), (3178, 6340), (4438, 4540)]