2157702920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{17939}}^1$

素因数の和:18078

約数の個数: 64

約数和(自身を含む): 5063385600

約数和(自身を除く): 2905682680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 124, 155, 194, 248, 310, 388, 485, 620, 776, 970, 1240, 1940, 3007, 3880, 6014, 12028, 15035, 17939, 24056, 30070, 35878, 60140, 71756, 89695, 120280, 143512, 179390, 358780, 556109, 717560, 1112218, 1740083, 2224436, 2780545, 3480166, 4448872, 5561090, 6960332, 8700415, 11122180, 13920664, 17400830, 22244360, 34801660, 53942573, 69603320, 107885146, 215770292, 269712865, 431540584, 539425730, 1078851460, 2157702920]

約数ペア:

[(1, 2157702920), (2, 1078851460), (4, 539425730), (5, 431540584), (8, 269712865), (10, 215770292), (20, 107885146), (31, 69603320), (40, 53942573), (62, 34801660), (97, 22244360), (124, 17400830), (155, 13920664), (194, 11122180), (248, 8700415), (310, 6960332), (388, 5561090), (485, 4448872), (620, 3480166), (776, 2780545), (970, 2224436), (1240, 1740083), (1940, 1112218), (3007, 717560), (3880, 556109), (6014, 358780), (12028, 179390), (15035, 143512), (17939, 120280), (24056, 89695), (30070, 71756), (35878, 60140)]