20180726820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{687823}}^1$

素因数の和:688001

約数の個数: 72

約数和(自身を含む): 61590512256

約数和(自身を除く): 41409785436

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 815, 978, 1467, 1630, 1956, 2445, 2934, 3260, 4890, 5868, 7335, 9780, 14670, 29340, 687823, 1375646, 2063469, 2751292, 3439115, 4126938, 6190407, 6878230, 8253876, 10317345, 12380814, 13756460, 20634690, 24761628, 30952035, 41269380, 61904070, 112115149, 123808140, 224230298, 336345447, 448460596, 560575745, 672690894, 1009036341, 1121151490, 1345381788, 1681727235, 2018072682, 2242302980, 3363454470, 4036145364, 5045181705, 6726908940, 10090363410, 20180726820]

約数ペア:

[(1, 20180726820), (2, 10090363410), (3, 6726908940), (4, 5045181705), (5, 4036145364), (6, 3363454470), (9, 2242302980), (10, 2018072682), (12, 1681727235), (15, 1345381788), (18, 1121151490), (20, 1009036341), (30, 672690894), (36, 560575745), (45, 448460596), (60, 336345447), (90, 224230298), (163, 123808140), (180, 112115149), (326, 61904070), (489, 41269380), (652, 30952035), (815, 24761628), (978, 20634690), (1467, 13756460), (1630, 12380814), (1956, 10317345), (2445, 8253876), (2934, 6878230), (3260, 6190407), (4890, 4126938), (5868, 3439115), (7335, 2751292), (9780, 2063469), (14670, 1375646), (29340, 687823)]