21437719491

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1\times {\mathrm{20177}}^1$

素因数の和:20531

約数の個数: 32

約数和(自身を含む): 30753209088

約数和(自身を除く): 9315489597

約数列:

[1, 3, 17, 51, 83, 249, 251, 753, 1411, 4233, 4267, 12801, 20177, 20833, 60531, 62499, 343009, 354161, 1029027, 1062483, 1674691, 5024073, 5064427, 15193281, 28469747, 85409241, 86095259, 258285777, 420347441, 1261042323, 7145906497, 21437719491]

約数ペア:

[(1, 21437719491), (3, 7145906497), (17, 1261042323), (51, 420347441), (83, 258285777), (249, 86095259), (251, 85409241), (753, 28469747), (1411, 15193281), (4233, 5064427), (4267, 5024073), (12801, 1674691), (20177, 1062483), (20833, 1029027), (60531, 354161), (62499, 343009)]