21626480

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{3257}}^1$

素因数の和:3353

約数の個数: 40

約数和(自身を含む): 50902992

約数和(自身を除く): 29276512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3257, 3320, 6514, 6640, 13028, 16285, 26056, 32570, 52112, 65140, 130280, 260560, 270331, 540662, 1081324, 1351655, 2162648, 2703310, 4325296, 5406620, 10813240, 21626480]

約数ペア:

[(1, 21626480), (2, 10813240), (4, 5406620), (5, 4325296), (8, 2703310), (10, 2162648), (16, 1351655), (20, 1081324), (40, 540662), (80, 270331), (83, 260560), (166, 130280), (332, 65140), (415, 52112), (664, 32570), (830, 26056), (1328, 16285), (1660, 13028), (3257, 6640), (3320, 6514)]