3977000

素因数分解:

$2^3\times 5^3\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 9631440

約数和(自身を除く): 5654440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 97, 100, 125, 164, 194, 200, 205, 250, 328, 388, 410, 485, 500, 776, 820, 970, 1000, 1025, 1640, 1940, 2050, 2425, 3880, 3977, 4100, 4850, 5125, 7954, 8200, 9700, 10250, 12125, 15908, 19400, 19885, 20500, 24250, 31816, 39770, 41000, 48500, 79540, 97000, 99425, 159080, 198850, 397700, 497125, 795400, 994250, 1988500, 3977000]

約数ペア:

[(1, 3977000), (2, 1988500), (4, 994250), (5, 795400), (8, 497125), (10, 397700), (20, 198850), (25, 159080), (40, 99425), (41, 97000), (50, 79540), (82, 48500), (97, 41000), (100, 39770), (125, 31816), (164, 24250), (194, 20500), (200, 19885), (205, 19400), (250, 15908), (328, 12125), (388, 10250), (410, 9700), (485, 8200), (500, 7954), (776, 5125), (820, 4850), (970, 4100), (1000, 3977), (1025, 3880), (1640, 2425), (1940, 2050)]