81559880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{433}}^1$

素因数の和:738

約数の個数: 64

約数和(自身を含む): 195456240

約数和(自身を除く): 113896360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 277, 340, 433, 554, 680, 866, 1108, 1385, 1732, 2165, 2216, 2770, 3464, 4330, 4709, 5540, 7361, 8660, 9418, 11080, 14722, 17320, 18836, 23545, 29444, 36805, 37672, 47090, 58888, 73610, 94180, 119941, 147220, 188360, 239882, 294440, 479764, 599705, 959528, 1199410, 2038997, 2398820, 4077994, 4797640, 8155988, 10194985, 16311976, 20389970, 40779940, 81559880]

約数ペア:

[(1, 81559880), (2, 40779940), (4, 20389970), (5, 16311976), (8, 10194985), (10, 8155988), (17, 4797640), (20, 4077994), (34, 2398820), (40, 2038997), (68, 1199410), (85, 959528), (136, 599705), (170, 479764), (277, 294440), (340, 239882), (433, 188360), (554, 147220), (680, 119941), (866, 94180), (1108, 73610), (1385, 58888), (1732, 47090), (2165, 37672), (2216, 36805), (2770, 29444), (3464, 23545), (4330, 18836), (4709, 17320), (5540, 14722), (7361, 11080), (8660, 9418)]