178720020

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{110321}}^1$

素因数の和:110342

約数の個数: 60

約数和(自身を含む): 560656404

約数和(自身を除く): 381936384

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 110321, 220642, 330963, 441284, 551605, 661926, 992889, 1103210, 1323852, 1654815, 1985778, 2206420, 2978667, 3309630, 3971556, 4964445, 5957334, 6619260, 8936001, 9928890, 11914668, 14893335, 17872002, 19857780, 29786670, 35744004, 44680005, 59573340, 89360010, 178720020]

約数ペア:

[(1, 178720020), (2, 89360010), (3, 59573340), (4, 44680005), (5, 35744004), (6, 29786670), (9, 19857780), (10, 17872002), (12, 14893335), (15, 11914668), (18, 9928890), (20, 8936001), (27, 6619260), (30, 5957334), (36, 4964445), (45, 3971556), (54, 3309630), (60, 2978667), (81, 2206420), (90, 1985778), (108, 1654815), (135, 1323852), (162, 1103210), (180, 992889), (270, 661926), (324, 551605), (405, 441284), (540, 330963), (810, 220642), (1620, 110321)]