19754720

素因数分解:

$2^5\times 5^1\times {\mathrm{311}}^1\times {\mathrm{397}}^1$

素因数の和:723

約数の個数: 48

約数和(自身を含む): 46938528

約数和(自身を除く): 27183808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 311, 397, 622, 794, 1244, 1555, 1588, 1985, 2488, 3110, 3176, 3970, 4976, 6220, 6352, 7940, 9952, 12440, 12704, 15880, 24880, 31760, 49760, 63520, 123467, 246934, 493868, 617335, 987736, 1234670, 1975472, 2469340, 3950944, 4938680, 9877360, 19754720]

約数ペア:

[(1, 19754720), (2, 9877360), (4, 4938680), (5, 3950944), (8, 2469340), (10, 1975472), (16, 1234670), (20, 987736), (32, 617335), (40, 493868), (80, 246934), (160, 123467), (311, 63520), (397, 49760), (622, 31760), (794, 24880), (1244, 15880), (1555, 12704), (1588, 12440), (1985, 9952), (2488, 7940), (3110, 6352), (3176, 6220), (3970, 4976)]