21379860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2897}}^1$

素因数の和:2953

約数の個数: 72

約数和(自身を含む): 66456936

約数和(自身を除く): 45077076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 246, 369, 410, 492, 615, 738, 820, 1230, 1476, 1845, 2460, 2897, 3690, 5794, 7380, 8691, 11588, 14485, 17382, 26073, 28970, 34764, 43455, 52146, 57940, 86910, 104292, 118777, 130365, 173820, 237554, 260730, 356331, 475108, 521460, 593885, 712662, 1068993, 1187770, 1425324, 1781655, 2137986, 2375540, 3563310, 4275972, 5344965, 7126620, 10689930, 21379860]

約数ペア:

[(1, 21379860), (2, 10689930), (3, 7126620), (4, 5344965), (5, 4275972), (6, 3563310), (9, 2375540), (10, 2137986), (12, 1781655), (15, 1425324), (18, 1187770), (20, 1068993), (30, 712662), (36, 593885), (41, 521460), (45, 475108), (60, 356331), (82, 260730), (90, 237554), (123, 173820), (164, 130365), (180, 118777), (205, 104292), (246, 86910), (369, 57940), (410, 52146), (492, 43455), (615, 34764), (738, 28970), (820, 26073), (1230, 17382), (1476, 14485), (1845, 11588), (2460, 8691), (2897, 7380), (3690, 5794)]