2019380920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 4813885440

約数和(自身を除く): 2794504520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 103, 124, 155, 163, 194, 206, 248, 310, 326, 388, 412, 485, 515, 620, 652, 776, 815, 824, 970, 1030, 1240, 1304, 1630, 1940, 2060, 3007, 3193, 3260, 3880, 4120, 5053, 6014, 6386, 6520, 9991, 10106, 12028, 12772, 15035, 15811, 15965, 16789, 19982, 20212, 24056, 25265, 25544, 30070, 31622, 31930, 33578, 39964, 40424, 49955, 50530, 60140, 63244, 63860, 67156, 79055, 79928, 83945, 99910, 101060, 120280, 126488, 127720, 134312, 158110, 167890, 199820, 202120, 309721, 316220, 335780, 399640, 490141, 520459, 619442, 632440, 671560, 980282, 1040918, 1238884, 1548605, 1628533, 1960564, 2081836, 2450705, 2477768, 2602295, 3097210, 3257066, 3921128, 4163672, 4901410, 5204590, 6194420, 6514132, 8142665, 9802820, 10409180, 12388840, 13028264, 16285330, 19605640, 20818360, 32570660, 50484523, 65141320, 100969046, 201938092, 252422615, 403876184, 504845230, 1009690460, 2019380920]

約数ペア:

[(1, 2019380920), (2, 1009690460), (4, 504845230), (5, 403876184), (8, 252422615), (10, 201938092), (20, 100969046), (31, 65141320), (40, 50484523), (62, 32570660), (97, 20818360), (103, 19605640), (124, 16285330), (155, 13028264), (163, 12388840), (194, 10409180), (206, 9802820), (248, 8142665), (310, 6514132), (326, 6194420), (388, 5204590), (412, 4901410), (485, 4163672), (515, 3921128), (620, 3257066), (652, 3097210), (776, 2602295), (815, 2477768), (824, 2450705), (970, 2081836), (1030, 1960564), (1240, 1628533), (1304, 1548605), (1630, 1238884), (1940, 1040918), (2060, 980282), (3007, 671560), (3193, 632440), (3260, 619442), (3880, 520459), (4120, 490141), (5053, 399640), (6014, 335780), (6386, 316220), (6520, 309721), (9991, 202120), (10106, 199820), (12028, 167890), (12772, 158110), (15035, 134312), (15811, 127720), (15965, 126488), (16789, 120280), (19982, 101060), (20212, 99910), (24056, 83945), (25265, 79928), (25544, 79055), (30070, 67156), (31622, 63860), (31930, 63244), (33578, 60140), (39964, 50530), (40424, 49955)]