20985228

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{269}}^1$

素因数の和:487

約数の個数: 72

約数和(自身を含む): 58378320

約数和(自身を除く): 37393092

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 99, 132, 197, 198, 269, 394, 396, 538, 591, 788, 807, 1076, 1182, 1614, 1773, 2167, 2364, 2421, 2959, 3228, 3546, 4334, 4842, 5918, 6501, 7092, 8668, 8877, 9684, 11836, 13002, 17754, 19503, 26004, 26631, 35508, 39006, 52993, 53262, 78012, 105986, 106524, 158979, 211972, 317958, 476937, 582923, 635916, 953874, 1165846, 1748769, 1907748, 2331692, 3497538, 5246307, 6995076, 10492614, 20985228]

約数ペア:

[(1, 20985228), (2, 10492614), (3, 6995076), (4, 5246307), (6, 3497538), (9, 2331692), (11, 1907748), (12, 1748769), (18, 1165846), (22, 953874), (33, 635916), (36, 582923), (44, 476937), (66, 317958), (99, 211972), (132, 158979), (197, 106524), (198, 105986), (269, 78012), (394, 53262), (396, 52993), (538, 39006), (591, 35508), (788, 26631), (807, 26004), (1076, 19503), (1182, 17754), (1614, 13002), (1773, 11836), (2167, 9684), (2364, 8877), (2421, 8668), (2959, 7092), (3228, 6501), (3546, 5918), (4334, 4842)]