1808240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3229}}^1$

素因数の和:3249

約数の個数: 40

約数和(自身を含む): 4806240

約数和(自身を除く): 2998000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3229, 6458, 12916, 16145, 22603, 25832, 32290, 45206, 51664, 64580, 90412, 113015, 129160, 180824, 226030, 258320, 361648, 452060, 904120, 1808240]

約数ペア:

[(1, 1808240), (2, 904120), (4, 452060), (5, 361648), (7, 258320), (8, 226030), (10, 180824), (14, 129160), (16, 113015), (20, 90412), (28, 64580), (35, 51664), (40, 45206), (56, 32290), (70, 25832), (80, 22603), (112, 16145), (140, 12916), (280, 6458), (560, 3229)]