21507760

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11689}}^1$

素因数の和:11725

約数の個数: 40

約数和(自身を含む): 52184160

約数和(自身を除く): 30676400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11689, 23378, 46756, 58445, 93512, 116890, 187024, 233780, 268847, 467560, 537694, 935120, 1075388, 1344235, 2150776, 2688470, 4301552, 5376940, 10753880, 21507760]

約数ペア:

[(1, 21507760), (2, 10753880), (4, 5376940), (5, 4301552), (8, 2688470), (10, 2150776), (16, 1344235), (20, 1075388), (23, 935120), (40, 537694), (46, 467560), (80, 268847), (92, 233780), (115, 187024), (184, 116890), (230, 93512), (368, 58445), (460, 46756), (920, 23378), (1840, 11689)]