21950360

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 51321600

約数和(自身を除く): 29371240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 71, 118, 131, 142, 236, 262, 284, 295, 355, 472, 524, 568, 590, 655, 710, 1048, 1180, 1310, 1420, 2360, 2620, 2840, 4189, 5240, 7729, 8378, 9301, 15458, 16756, 18602, 20945, 30916, 33512, 37204, 38645, 41890, 46505, 61832, 74408, 77290, 83780, 93010, 154580, 167560, 186020, 309160, 372040, 548759, 1097518, 2195036, 2743795, 4390072, 5487590, 10975180, 21950360]

約数ペア:

[(1, 21950360), (2, 10975180), (4, 5487590), (5, 4390072), (8, 2743795), (10, 2195036), (20, 1097518), (40, 548759), (59, 372040), (71, 309160), (118, 186020), (131, 167560), (142, 154580), (236, 93010), (262, 83780), (284, 77290), (295, 74408), (355, 61832), (472, 46505), (524, 41890), (568, 38645), (590, 37204), (655, 33512), (710, 30916), (1048, 20945), (1180, 18602), (1310, 16756), (1420, 15458), (2360, 9301), (2620, 8378), (2840, 7729), (4189, 5240)]