19842320

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2557}}^1$

素因数の和:2667

約数の個数: 40

約数和(自身を含む): 46627224

約数和(自身を除く): 26784904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 2557, 3880, 5114, 7760, 10228, 12785, 20456, 25570, 40912, 51140, 102280, 204560, 248029, 496058, 992116, 1240145, 1984232, 2480290, 3968464, 4960580, 9921160, 19842320]

約数ペア:

[(1, 19842320), (2, 9921160), (4, 4960580), (5, 3968464), (8, 2480290), (10, 1984232), (16, 1240145), (20, 992116), (40, 496058), (80, 248029), (97, 204560), (194, 102280), (388, 51140), (485, 40912), (776, 25570), (970, 20456), (1552, 12785), (1940, 10228), (2557, 7760), (3880, 5114)]