256626240

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20563}}^1$

素因数の和:20596

約数の個数: 112

約数和(自身を含む): 877507008

約数和(自身を除く): 620880768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 2080, 2496, 3120, 4160, 6240, 12480, 20563, 41126, 61689, 82252, 102815, 123378, 164504, 205630, 246756, 267319, 308445, 329008, 411260, 493512, 534638, 616890, 658016, 801957, 822520, 987024, 1069276, 1233780, 1316032, 1336595, 1603914, 1645040, 1974048, 2138552, 2467560, 2673190, 3207828, 3290080, 3948096, 4009785, 4277104, 4935120, 5346380, 6415656, 6580160, 8019570, 8554208, 9870240, 10692760, 12831312, 16039140, 17108416, 19740480, 21385520, 25662624, 32078280, 42771040, 51325248, 64156560, 85542080, 128313120, 256626240]

約数ペア:

[(1, 256626240), (2, 128313120), (3, 85542080), (4, 64156560), (5, 51325248), (6, 42771040), (8, 32078280), (10, 25662624), (12, 21385520), (13, 19740480), (15, 17108416), (16, 16039140), (20, 12831312), (24, 10692760), (26, 9870240), (30, 8554208), (32, 8019570), (39, 6580160), (40, 6415656), (48, 5346380), (52, 4935120), (60, 4277104), (64, 4009785), (65, 3948096), (78, 3290080), (80, 3207828), (96, 2673190), (104, 2467560), (120, 2138552), (130, 1974048), (156, 1645040), (160, 1603914), (192, 1336595), (195, 1316032), (208, 1233780), (240, 1069276), (260, 987024), (312, 822520), (320, 801957), (390, 658016), (416, 616890), (480, 534638), (520, 493512), (624, 411260), (780, 329008), (832, 308445), (960, 267319), (1040, 246756), (1248, 205630), (1560, 164504), (2080, 123378), (2496, 102815), (3120, 82252), (4160, 61689), (6240, 41126), (12480, 20563)]