19748460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{47}}^2\times {\mathrm{149}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 56876400

約数和(自身を除く): 37127940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 47, 60, 94, 141, 149, 188, 235, 282, 298, 447, 470, 564, 596, 705, 745, 894, 940, 1410, 1490, 1788, 2209, 2235, 2820, 2980, 4418, 4470, 6627, 7003, 8836, 8940, 11045, 13254, 14006, 21009, 22090, 26508, 28012, 33135, 35015, 42018, 44180, 66270, 70030, 84036, 105045, 132540, 140060, 210090, 329141, 420180, 658282, 987423, 1316564, 1645705, 1974846, 3291410, 3949692, 4937115, 6582820, 9874230, 19748460]

約数ペア:

[(1, 19748460), (2, 9874230), (3, 6582820), (4, 4937115), (5, 3949692), (6, 3291410), (10, 1974846), (12, 1645705), (15, 1316564), (20, 987423), (30, 658282), (47, 420180), (60, 329141), (94, 210090), (141, 140060), (149, 132540), (188, 105045), (235, 84036), (282, 70030), (298, 66270), (447, 44180), (470, 42018), (564, 35015), (596, 33135), (705, 28012), (745, 26508), (894, 22090), (940, 21009), (1410, 14006), (1490, 13254), (1788, 11045), (2209, 8940), (2235, 8836), (2820, 7003), (2980, 6627), (4418, 4470)]