20489136

素因数分解:

$2^4\times 3^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{277}}^1$

素因数の和:378

約数の個数: 80

約数和(自身を含む): 56258304

約数和(自身を除く): 35769168

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 46, 48, 67, 69, 92, 134, 138, 184, 201, 268, 276, 277, 368, 402, 536, 552, 554, 804, 831, 1072, 1104, 1108, 1541, 1608, 1662, 2216, 3082, 3216, 3324, 4432, 4623, 6164, 6371, 6648, 9246, 12328, 12742, 13296, 18492, 18559, 19113, 24656, 25484, 36984, 37118, 38226, 50968, 55677, 73968, 74236, 76452, 101936, 111354, 148472, 152904, 222708, 296944, 305808, 426857, 445416, 853714, 890832, 1280571, 1707428, 2561142, 3414856, 5122284, 6829712, 10244568, 20489136]

約数ペア:

[(1, 20489136), (2, 10244568), (3, 6829712), (4, 5122284), (6, 3414856), (8, 2561142), (12, 1707428), (16, 1280571), (23, 890832), (24, 853714), (46, 445416), (48, 426857), (67, 305808), (69, 296944), (92, 222708), (134, 152904), (138, 148472), (184, 111354), (201, 101936), (268, 76452), (276, 74236), (277, 73968), (368, 55677), (402, 50968), (536, 38226), (552, 37118), (554, 36984), (804, 25484), (831, 24656), (1072, 19113), (1104, 18559), (1108, 18492), (1541, 13296), (1608, 12742), (1662, 12328), (2216, 9246), (3082, 6648), (3216, 6371), (3324, 6164), (4432, 4623)]