30204020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1783}}^1$

素因数の和:1821

約数の個数: 72

約数和(自身を含む): 79723392

約数和(自身を除く): 49519372

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1694, 1783, 2420, 3388, 3566, 4235, 7132, 8470, 8915, 12481, 16940, 17830, 19613, 24962, 35660, 39226, 49924, 62405, 78452, 98065, 124810, 137291, 196130, 215743, 249620, 274582, 392260, 431486, 549164, 686455, 862972, 1078715, 1372910, 1510201, 2157430, 2745820, 3020402, 4314860, 6040804, 7551005, 15102010, 30204020]

約数ペア:

[(1, 30204020), (2, 15102010), (4, 7551005), (5, 6040804), (7, 4314860), (10, 3020402), (11, 2745820), (14, 2157430), (20, 1510201), (22, 1372910), (28, 1078715), (35, 862972), (44, 686455), (55, 549164), (70, 431486), (77, 392260), (110, 274582), (121, 249620), (140, 215743), (154, 196130), (220, 137291), (242, 124810), (308, 98065), (385, 78452), (484, 62405), (605, 49924), (770, 39226), (847, 35660), (1210, 24962), (1540, 19613), (1694, 17830), (1783, 16940), (2420, 12481), (3388, 8915), (3566, 8470), (4235, 7132)]