21943940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{277}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 49179312

約数和(自身を除く): 27235372

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 233, 277, 340, 466, 554, 932, 1108, 1165, 1385, 2330, 2770, 3961, 4660, 4709, 5540, 7922, 9418, 15844, 18836, 19805, 23545, 39610, 47090, 64541, 79220, 94180, 129082, 258164, 322705, 645410, 1097197, 1290820, 2194394, 4388788, 5485985, 10971970, 21943940]

約数ペア:

[(1, 21943940), (2, 10971970), (4, 5485985), (5, 4388788), (10, 2194394), (17, 1290820), (20, 1097197), (34, 645410), (68, 322705), (85, 258164), (170, 129082), (233, 94180), (277, 79220), (340, 64541), (466, 47090), (554, 39610), (932, 23545), (1108, 19805), (1165, 18836), (1385, 15844), (2330, 9418), (2770, 7922), (3961, 5540), (4660, 4709)]