19841780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{593}}^1$

素因数の和:848

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 28058380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 593, 956, 1186, 1195, 1673, 2372, 2390, 2965, 3346, 4151, 4780, 5930, 6692, 8302, 8365, 11860, 16604, 16730, 20755, 33460, 41510, 83020, 141727, 283454, 566908, 708635, 992089, 1417270, 1984178, 2834540, 3968356, 4960445, 9920890, 19841780]

約数ペア:

[(1, 19841780), (2, 9920890), (4, 4960445), (5, 3968356), (7, 2834540), (10, 1984178), (14, 1417270), (20, 992089), (28, 708635), (35, 566908), (70, 283454), (140, 141727), (239, 83020), (478, 41510), (593, 33460), (956, 20755), (1186, 16730), (1195, 16604), (1673, 11860), (2372, 8365), (2390, 8302), (2965, 6692), (3346, 5930), (4151, 4780)]