8712500

素因数分解:

$2^2\times 5^5\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:87

約数の個数: 72

約数和(自身を含む): 20670552

約数和(自身を除く): 11958052

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 41, 50, 68, 82, 85, 100, 125, 164, 170, 205, 250, 340, 410, 425, 500, 625, 697, 820, 850, 1025, 1250, 1394, 1700, 2050, 2125, 2500, 2788, 3125, 3485, 4100, 4250, 5125, 6250, 6970, 8500, 10250, 10625, 12500, 13940, 17425, 20500, 21250, 25625, 34850, 42500, 51250, 53125, 69700, 87125, 102500, 106250, 128125, 174250, 212500, 256250, 348500, 435625, 512500, 871250, 1742500, 2178125, 4356250, 8712500]

約数ペア:

[(1, 8712500), (2, 4356250), (4, 2178125), (5, 1742500), (10, 871250), (17, 512500), (20, 435625), (25, 348500), (34, 256250), (41, 212500), (50, 174250), (68, 128125), (82, 106250), (85, 102500), (100, 87125), (125, 69700), (164, 53125), (170, 51250), (205, 42500), (250, 34850), (340, 25625), (410, 21250), (425, 20500), (500, 17425), (625, 13940), (697, 12500), (820, 10625), (850, 10250), (1025, 8500), (1250, 6970), (1394, 6250), (1700, 5125), (2050, 4250), (2125, 4100), (2500, 3485), (2788, 3125)]