21389520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89123}}^1$

素因数の和:89139

約数の個数: 40

約数和(自身を含む): 66308256

約数和(自身を除く): 44918736

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89123, 178246, 267369, 356492, 445615, 534738, 712984, 891230, 1069476, 1336845, 1425968, 1782460, 2138952, 2673690, 3564920, 4277904, 5347380, 7129840, 10694760, 21389520]

約数ペア:

[(1, 21389520), (2, 10694760), (3, 7129840), (4, 5347380), (5, 4277904), (6, 3564920), (8, 2673690), (10, 2138952), (12, 1782460), (15, 1425968), (16, 1336845), (20, 1069476), (24, 891230), (30, 712984), (40, 534738), (48, 445615), (60, 356492), (80, 267369), (120, 178246), (240, 89123)]