21343120

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{619}}^1$

素因数の和:1063

約数の個数: 40

約数和(自身を含む): 49818240

約数和(自身を除く): 28475120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 619, 862, 1238, 1724, 2155, 2476, 3095, 3448, 4310, 4952, 6190, 6896, 8620, 9904, 12380, 17240, 24760, 34480, 49520, 266789, 533578, 1067156, 1333945, 2134312, 2667890, 4268624, 5335780, 10671560, 21343120]

約数ペア:

[(1, 21343120), (2, 10671560), (4, 5335780), (5, 4268624), (8, 2667890), (10, 2134312), (16, 1333945), (20, 1067156), (40, 533578), (80, 266789), (431, 49520), (619, 34480), (862, 24760), (1238, 17240), (1724, 12380), (2155, 9904), (2476, 8620), (3095, 6896), (3448, 6190), (4310, 4952)]