19438240

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3919}}^1$

素因数の和:3965

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 27978080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 3919, 4960, 7838, 15676, 19595, 31352, 39190, 62704, 78380, 121489, 125408, 156760, 242978, 313520, 485956, 607445, 627040, 971912, 1214890, 1943824, 2429780, 3887648, 4859560, 9719120, 19438240]

約数ペア:

[(1, 19438240), (2, 9719120), (4, 4859560), (5, 3887648), (8, 2429780), (10, 1943824), (16, 1214890), (20, 971912), (31, 627040), (32, 607445), (40, 485956), (62, 313520), (80, 242978), (124, 156760), (155, 125408), (160, 121489), (248, 78380), (310, 62704), (496, 39190), (620, 31352), (992, 19595), (1240, 15676), (2480, 7838), (3919, 4960)]