20530432

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 45785600

約数和(自身を除く): 25255168

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 199, 208, 248, 256, 398, 403, 416, 496, 796, 806, 832, 992, 1592, 1612, 1664, 1984, 2587, 3184, 3224, 3328, 3968, 5174, 6169, 6368, 6448, 7936, 10348, 12338, 12736, 12896, 20696, 24676, 25472, 25792, 41392, 49352, 50944, 51584, 80197, 82784, 98704, 103168, 160394, 165568, 197408, 320788, 331136, 394816, 641576, 662272, 789632, 1283152, 1579264, 2566304, 5132608, 10265216, 20530432]

約数ペア:

[(1, 20530432), (2, 10265216), (4, 5132608), (8, 2566304), (13, 1579264), (16, 1283152), (26, 789632), (31, 662272), (32, 641576), (52, 394816), (62, 331136), (64, 320788), (104, 197408), (124, 165568), (128, 160394), (199, 103168), (208, 98704), (248, 82784), (256, 80197), (398, 51584), (403, 50944), (416, 49352), (496, 41392), (796, 25792), (806, 25472), (832, 24676), (992, 20696), (1592, 12896), (1612, 12736), (1664, 12338), (1984, 10348), (2587, 7936), (3184, 6448), (3224, 6368), (3328, 6169), (3968, 5174)]