21721200

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{787}}^1$

素因数の和:831

約数の個数: 120

約数和(自身を含む): 72697728

約数和(自身を除く): 50976528

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 25, 30, 40, 46, 48, 50, 60, 69, 75, 80, 92, 100, 115, 120, 138, 150, 184, 200, 230, 240, 276, 300, 345, 368, 400, 460, 552, 575, 600, 690, 787, 920, 1104, 1150, 1200, 1380, 1574, 1725, 1840, 2300, 2361, 2760, 3148, 3450, 3935, 4600, 4722, 5520, 6296, 6900, 7870, 9200, 9444, 11805, 12592, 13800, 15740, 18101, 18888, 19675, 23610, 27600, 31480, 36202, 37776, 39350, 47220, 54303, 59025, 62960, 72404, 78700, 90505, 94440, 108606, 118050, 144808, 157400, 181010, 188880, 217212, 236100, 271515, 289616, 314800, 362020, 434424, 452525, 472200, 543030, 724040, 868848, 905050, 944400, 1086060, 1357575, 1448080, 1810100, 2172120, 2715150, 3620200, 4344240, 5430300, 7240400, 10860600, 21721200]

約数ペア:

[(1, 21721200), (2, 10860600), (3, 7240400), (4, 5430300), (5, 4344240), (6, 3620200), (8, 2715150), (10, 2172120), (12, 1810100), (15, 1448080), (16, 1357575), (20, 1086060), (23, 944400), (24, 905050), (25, 868848), (30, 724040), (40, 543030), (46, 472200), (48, 452525), (50, 434424), (60, 362020), (69, 314800), (75, 289616), (80, 271515), (92, 236100), (100, 217212), (115, 188880), (120, 181010), (138, 157400), (150, 144808), (184, 118050), (200, 108606), (230, 94440), (240, 90505), (276, 78700), (300, 72404), (345, 62960), (368, 59025), (400, 54303), (460, 47220), (552, 39350), (575, 37776), (600, 36202), (690, 31480), (787, 27600), (920, 23610), (1104, 19675), (1150, 18888), (1200, 18101), (1380, 15740), (1574, 13800), (1725, 12592), (1840, 11805), (2300, 9444), (2361, 9200), (2760, 7870), (3148, 6900), (3450, 6296), (3935, 5520), (4600, 4722)]