205480400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:349

約数の個数: 120

約数和(自身を含む): 518847744

約数和(自身を除く): 313367344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 73, 80, 100, 124, 146, 155, 200, 227, 248, 292, 310, 365, 400, 454, 496, 584, 620, 730, 775, 908, 1135, 1168, 1240, 1460, 1550, 1816, 1825, 2263, 2270, 2480, 2920, 3100, 3632, 3650, 4526, 4540, 5675, 5840, 6200, 7037, 7300, 9052, 9080, 11315, 11350, 12400, 14074, 14600, 16571, 18104, 18160, 22630, 22700, 28148, 29200, 33142, 35185, 36208, 45260, 45400, 56296, 56575, 66284, 70370, 82855, 90520, 90800, 112592, 113150, 132568, 140740, 165710, 175925, 181040, 226300, 265136, 281480, 331420, 351850, 414275, 452600, 513701, 562960, 662840, 703700, 828550, 905200, 1027402, 1325680, 1407400, 1657100, 2054804, 2568505, 2814800, 3314200, 4109608, 5137010, 6628400, 8219216, 10274020, 12842525, 20548040, 25685050, 41096080, 51370100, 102740200, 205480400]

約数ペア:

[(1, 205480400), (2, 102740200), (4, 51370100), (5, 41096080), (8, 25685050), (10, 20548040), (16, 12842525), (20, 10274020), (25, 8219216), (31, 6628400), (40, 5137010), (50, 4109608), (62, 3314200), (73, 2814800), (80, 2568505), (100, 2054804), (124, 1657100), (146, 1407400), (155, 1325680), (200, 1027402), (227, 905200), (248, 828550), (292, 703700), (310, 662840), (365, 562960), (400, 513701), (454, 452600), (496, 414275), (584, 351850), (620, 331420), (730, 281480), (775, 265136), (908, 226300), (1135, 181040), (1168, 175925), (1240, 165710), (1460, 140740), (1550, 132568), (1816, 113150), (1825, 112592), (2263, 90800), (2270, 90520), (2480, 82855), (2920, 70370), (3100, 66284), (3632, 56575), (3650, 56296), (4526, 45400), (4540, 45260), (5675, 36208), (5840, 35185), (6200, 33142), (7037, 29200), (7300, 28148), (9052, 22700), (9080, 22630), (11315, 18160), (11350, 18104), (12400, 16571), (14074, 14600)]