20899291252

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{761}}^1\times {\mathrm{2297}}^1$

素因数の和:3137

約数の個数: 72

約数和(自身を含む): 43318118088

約数和(自身を除く): 22418826836

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 122, 196, 244, 427, 761, 854, 1522, 1708, 2297, 2989, 3044, 4594, 5327, 5978, 9188, 10654, 11956, 16079, 21308, 32158, 37289, 46421, 64316, 74578, 92842, 112553, 140117, 149156, 185684, 225106, 280234, 324947, 450212, 560468, 649894, 980819, 1299788, 1748017, 1961638, 2274629, 3496034, 3923276, 4549258, 6865733, 6992068, 9098516, 12236119, 13731466, 24472238, 27462932, 48944476, 85652833, 106629037, 171305666, 213258074, 342611332, 426516148, 746403259, 1492806518, 2985613036, 5224822813, 10449645626, 20899291252]

約数ペア:

[(1, 20899291252), (2, 10449645626), (4, 5224822813), (7, 2985613036), (14, 1492806518), (28, 746403259), (49, 426516148), (61, 342611332), (98, 213258074), (122, 171305666), (196, 106629037), (244, 85652833), (427, 48944476), (761, 27462932), (854, 24472238), (1522, 13731466), (1708, 12236119), (2297, 9098516), (2989, 6992068), (3044, 6865733), (4594, 4549258), (5327, 3923276), (5978, 3496034), (9188, 2274629), (10654, 1961638), (11956, 1748017), (16079, 1299788), (21308, 980819), (32158, 649894), (37289, 560468), (46421, 450212), (64316, 324947), (74578, 280234), (92842, 225106), (112553, 185684), (140117, 149156)]