28690040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8059}}^1$

素因数の和:8159

約数の個数: 32

約数和(自身を含む): 65286000

約数和(自身を除く): 36595960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8059, 16118, 32236, 40295, 64472, 80590, 161180, 322360, 717251, 1434502, 2869004, 3586255, 5738008, 7172510, 14345020, 28690040]

約数ペア:

[(1, 28690040), (2, 14345020), (4, 7172510), (5, 5738008), (8, 3586255), (10, 2869004), (20, 1434502), (40, 717251), (89, 322360), (178, 161180), (356, 80590), (445, 64472), (712, 40295), (890, 32236), (1780, 16118), (3560, 8059)]