20008212460

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{641}}^1\times {\mathrm{12289}}^1$

素因数の和:13066

約数の個数: 48

約数和(自身を含む): 42417607680

約数和(自身を除く): 22409395220

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 641, 1270, 1282, 2540, 2564, 3205, 6410, 12289, 12820, 24578, 49156, 61445, 81407, 122890, 162814, 245780, 325628, 407035, 814070, 1560703, 1628140, 3121406, 6242812, 7803515, 7877249, 15607030, 15754498, 31214060, 31508996, 39386245, 78772490, 157544980, 1000410623, 2000821246, 4001642492, 5002053115, 10004106230, 20008212460]

約数ペア:

[(1, 20008212460), (2, 10004106230), (4, 5002053115), (5, 4001642492), (10, 2000821246), (20, 1000410623), (127, 157544980), (254, 78772490), (508, 39386245), (635, 31508996), (641, 31214060), (1270, 15754498), (1282, 15607030), (2540, 7877249), (2564, 7803515), (3205, 6242812), (6410, 3121406), (12289, 1628140), (12820, 1560703), (24578, 814070), (49156, 407035), (61445, 325628), (81407, 245780), (122890, 162814)]