15851540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 35341824

約数和(自身を除く): 19490284

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 185, 310, 370, 620, 691, 740, 1147, 1382, 2294, 2764, 3455, 4588, 5735, 6910, 11470, 13820, 21421, 22940, 25567, 42842, 51134, 85684, 102268, 107105, 127835, 214210, 255670, 428420, 511340, 792577, 1585154, 3170308, 3962885, 7925770, 15851540]

約数ペア:

[(1, 15851540), (2, 7925770), (4, 3962885), (5, 3170308), (10, 1585154), (20, 792577), (31, 511340), (37, 428420), (62, 255670), (74, 214210), (124, 127835), (148, 107105), (155, 102268), (185, 85684), (310, 51134), (370, 42842), (620, 25567), (691, 22940), (740, 21421), (1147, 13820), (1382, 11470), (2294, 6910), (2764, 5735), (3455, 4588)]