90339920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{409}}^1$

素因数の和:684

約数の個数: 80

約数和(自身を含む): 230610240

約数和(自身を除く): 140270320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 251, 409, 440, 502, 818, 880, 1004, 1255, 1636, 2008, 2045, 2510, 2761, 3272, 4016, 4090, 4499, 5020, 5522, 6544, 8180, 8998, 10040, 11044, 13805, 16360, 17996, 20080, 22088, 22495, 27610, 32720, 35992, 44176, 44990, 55220, 71984, 89980, 102659, 110440, 179960, 205318, 220880, 359920, 410636, 513295, 821272, 1026590, 1129249, 1642544, 2053180, 2258498, 4106360, 4516996, 5646245, 8212720, 9033992, 11292490, 18067984, 22584980, 45169960, 90339920]

約数ペア:

[(1, 90339920), (2, 45169960), (4, 22584980), (5, 18067984), (8, 11292490), (10, 9033992), (11, 8212720), (16, 5646245), (20, 4516996), (22, 4106360), (40, 2258498), (44, 2053180), (55, 1642544), (80, 1129249), (88, 1026590), (110, 821272), (176, 513295), (220, 410636), (251, 359920), (409, 220880), (440, 205318), (502, 179960), (818, 110440), (880, 102659), (1004, 89980), (1255, 71984), (1636, 55220), (2008, 44990), (2045, 44176), (2510, 35992), (2761, 32720), (3272, 27610), (4016, 22495), (4090, 22088), (4499, 20080), (5020, 17996), (5522, 16360), (6544, 13805), (8180, 11044), (8998, 10040)]