51978640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{919}}^1$

素因数の和:1040

約数の個数: 80

約数和(自身を含む): 139633920

約数和(自身を除く): 87655280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 404, 505, 560, 707, 808, 919, 1010, 1414, 1616, 1838, 2020, 2828, 3535, 3676, 4040, 4595, 5656, 6433, 7070, 7352, 8080, 9190, 11312, 12866, 14140, 14704, 18380, 25732, 28280, 32165, 36760, 51464, 56560, 64330, 73520, 92819, 102928, 128660, 185638, 257320, 371276, 464095, 514640, 649733, 742552, 928190, 1299466, 1485104, 1856380, 2598932, 3248665, 3712760, 5197864, 6497330, 7425520, 10395728, 12994660, 25989320, 51978640]

約数ペア:

[(1, 51978640), (2, 25989320), (4, 12994660), (5, 10395728), (7, 7425520), (8, 6497330), (10, 5197864), (14, 3712760), (16, 3248665), (20, 2598932), (28, 1856380), (35, 1485104), (40, 1299466), (56, 928190), (70, 742552), (80, 649733), (101, 514640), (112, 464095), (140, 371276), (202, 257320), (280, 185638), (404, 128660), (505, 102928), (560, 92819), (707, 73520), (808, 64330), (919, 56560), (1010, 51464), (1414, 36760), (1616, 32165), (1838, 28280), (2020, 25732), (2828, 18380), (3535, 14704), (3676, 14140), (4040, 12866), (4595, 11312), (5656, 9190), (6433, 8080), (7070, 7352)]