20195697100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1999}}^1\times {\mathrm{3259}}^1$

素因数の和:5303

約数の個数: 72

約数和(自身を含む): 45274880000

約数和(自身を除く): 25079182900

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 1999, 3100, 3259, 3998, 6518, 7996, 9995, 13036, 16295, 19990, 32590, 39980, 49975, 61969, 65180, 81475, 99950, 101029, 123938, 162950, 199900, 202058, 247876, 309845, 325900, 404116, 505145, 619690, 1010290, 1239380, 1549225, 2020580, 2525725, 3098450, 5051450, 6196900, 6514741, 10102900, 13029482, 26058964, 32573705, 65147410, 130294820, 162868525, 201956971, 325737050, 403913942, 651474100, 807827884, 1009784855, 2019569710, 4039139420, 5048924275, 10097848550, 20195697100]

約数ペア:

[(1, 20195697100), (2, 10097848550), (4, 5048924275), (5, 4039139420), (10, 2019569710), (20, 1009784855), (25, 807827884), (31, 651474100), (50, 403913942), (62, 325737050), (100, 201956971), (124, 162868525), (155, 130294820), (310, 65147410), (620, 32573705), (775, 26058964), (1550, 13029482), (1999, 10102900), (3100, 6514741), (3259, 6196900), (3998, 5051450), (6518, 3098450), (7996, 2525725), (9995, 2020580), (13036, 1549225), (16295, 1239380), (19990, 1010290), (32590, 619690), (39980, 505145), (49975, 404116), (61969, 325900), (65180, 309845), (81475, 247876), (99950, 202058), (101029, 199900), (123938, 162950)]