19479920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5939}}^1$

素因数の和:5993

約数の個数: 40

約数和(自身を含む): 46403280

約数和(自身を除く): 26923360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5939, 11878, 23756, 29695, 47512, 59390, 95024, 118780, 237560, 243499, 475120, 486998, 973996, 1217495, 1947992, 2434990, 3895984, 4869980, 9739960, 19479920]

約数ペア:

[(1, 19479920), (2, 9739960), (4, 4869980), (5, 3895984), (8, 2434990), (10, 1947992), (16, 1217495), (20, 973996), (40, 486998), (41, 475120), (80, 243499), (82, 237560), (164, 118780), (205, 95024), (328, 59390), (410, 47512), (656, 29695), (820, 23756), (1640, 11878), (3280, 5939)]