20638416

素因数分解:

$2^4\times 3^1\times {\mathrm{41}}^1\times {\mathrm{10487}}^1$

素因数の和:10539

約数の個数: 40

約数和(自身を含む): 54621504

約数和(自身を除く): 33983088

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 41, 48, 82, 123, 164, 246, 328, 492, 656, 984, 1968, 10487, 20974, 31461, 41948, 62922, 83896, 125844, 167792, 251688, 429967, 503376, 859934, 1289901, 1719868, 2579802, 3439736, 5159604, 6879472, 10319208, 20638416]

約数ペア:

[(1, 20638416), (2, 10319208), (3, 6879472), (4, 5159604), (6, 3439736), (8, 2579802), (12, 1719868), (16, 1289901), (24, 859934), (41, 503376), (48, 429967), (82, 251688), (123, 167792), (164, 125844), (246, 83896), (328, 62922), (492, 41948), (656, 31461), (984, 20974), (1968, 10487)]