212216560

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{43487}}^1$

素因数の和:43561

約数の個数: 40

約数和(自身を含む): 501503616

約数和(自身を除く): 289287056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 43487, 86974, 173948, 217435, 347896, 434870, 695792, 869740, 1739480, 2652707, 3478960, 5305414, 10610828, 13263535, 21221656, 26527070, 42443312, 53054140, 106108280, 212216560]

約数ペア:

[(1, 212216560), (2, 106108280), (4, 53054140), (5, 42443312), (8, 26527070), (10, 21221656), (16, 13263535), (20, 10610828), (40, 5305414), (61, 3478960), (80, 2652707), (122, 1739480), (244, 869740), (305, 695792), (488, 434870), (610, 347896), (976, 217435), (1220, 173948), (2440, 86974), (4880, 43487)]