205380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{163}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 716352

約数和(自身を除く): 510972

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 163, 180, 210, 252, 315, 326, 420, 489, 630, 652, 815, 978, 1141, 1260, 1467, 1630, 1956, 2282, 2445, 2934, 3260, 3423, 4564, 4890, 5705, 5868, 6846, 7335, 9780, 10269, 11410, 13692, 14670, 17115, 20538, 22820, 29340, 34230, 41076, 51345, 68460, 102690, 205380]

約数ペア:

[(1, 205380), (2, 102690), (3, 68460), (4, 51345), (5, 41076), (6, 34230), (7, 29340), (9, 22820), (10, 20538), (12, 17115), (14, 14670), (15, 13692), (18, 11410), (20, 10269), (21, 9780), (28, 7335), (30, 6846), (35, 5868), (36, 5705), (42, 4890), (45, 4564), (60, 3423), (63, 3260), (70, 2934), (84, 2445), (90, 2282), (105, 1956), (126, 1630), (140, 1467), (163, 1260), (180, 1141), (210, 978), (252, 815), (315, 652), (326, 630), (420, 489)]