253775240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1\times {\mathrm{571}}^1$

素因数の和:894

約数の個数: 64

約数和(自身を含む): 588107520

約数和(自身を除く): 334332280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 271, 328, 410, 542, 571, 820, 1084, 1142, 1355, 1640, 2168, 2284, 2710, 2855, 4568, 5420, 5710, 10840, 11111, 11420, 22222, 22840, 23411, 44444, 46822, 55555, 88888, 93644, 111110, 117055, 154741, 187288, 222220, 234110, 309482, 444440, 468220, 618964, 773705, 936440, 1237928, 1547410, 3094820, 6189640, 6344381, 12688762, 25377524, 31721905, 50755048, 63443810, 126887620, 253775240]

約数ペア:

[(1, 253775240), (2, 126887620), (4, 63443810), (5, 50755048), (8, 31721905), (10, 25377524), (20, 12688762), (40, 6344381), (41, 6189640), (82, 3094820), (164, 1547410), (205, 1237928), (271, 936440), (328, 773705), (410, 618964), (542, 468220), (571, 444440), (820, 309482), (1084, 234110), (1142, 222220), (1355, 187288), (1640, 154741), (2168, 117055), (2284, 111110), (2710, 93644), (2855, 88888), (4568, 55555), (5420, 46822), (5710, 44444), (10840, 23411), (11111, 22840), (11420, 22222)]