21783760

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11839}}^1$

素因数の和:11875

約数の個数: 40

約数和(自身を含む): 52853760

約数和(自身を除く): 31070000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11839, 23678, 47356, 59195, 94712, 118390, 189424, 236780, 272297, 473560, 544594, 947120, 1089188, 1361485, 2178376, 2722970, 4356752, 5445940, 10891880, 21783760]

約数ペア:

[(1, 21783760), (2, 10891880), (4, 5445940), (5, 4356752), (8, 2722970), (10, 2178376), (16, 1361485), (20, 1089188), (23, 947120), (40, 544594), (46, 473560), (80, 272297), (92, 236780), (115, 189424), (184, 118390), (230, 94712), (368, 59195), (460, 47356), (920, 23678), (1840, 11839)]