1285221880

素因数分解:

$2^3\times 5^1\times {\mathrm{2213}}^1\times {\mathrm{14519}}^1$

素因数の和:16743

約数の個数: 32

約数和(自身を含む): 2893255200

約数和(自身を除く): 1608033320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2213, 4426, 8852, 11065, 14519, 17704, 22130, 29038, 44260, 58076, 72595, 88520, 116152, 145190, 290380, 580760, 32130547, 64261094, 128522188, 160652735, 257044376, 321305470, 642610940, 1285221880]

約数ペア:

[(1, 1285221880), (2, 642610940), (4, 321305470), (5, 257044376), (8, 160652735), (10, 128522188), (20, 64261094), (40, 32130547), (2213, 580760), (4426, 290380), (8852, 145190), (11065, 116152), (14519, 88520), (17704, 72595), (22130, 58076), (29038, 44260)]