20385508

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{227}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 42364224

約数和(自身を除く): 21978716

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 157, 227, 286, 314, 454, 572, 628, 908, 1727, 2041, 2497, 2951, 3454, 4082, 4994, 5902, 6908, 8164, 9988, 11804, 22451, 32461, 35639, 44902, 64922, 71278, 89804, 129844, 142556, 392029, 463307, 784058, 926614, 1568116, 1853228, 5096377, 10192754, 20385508]

約数ペア:

[(1, 20385508), (2, 10192754), (4, 5096377), (11, 1853228), (13, 1568116), (22, 926614), (26, 784058), (44, 463307), (52, 392029), (143, 142556), (157, 129844), (227, 89804), (286, 71278), (314, 64922), (454, 44902), (572, 35639), (628, 32461), (908, 22451), (1727, 11804), (2041, 9988), (2497, 8164), (2951, 6908), (3454, 5902), (4082, 4994)]