19400080

素因数分解:

$2^4\times 5^1\times 7^4\times {\mathrm{101}}^1$

素因数の和:142

約数の個数: 100

約数和(自身を含む): 53140572

約数和(自身を除く): 33740492

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 101, 112, 140, 196, 202, 245, 280, 343, 392, 404, 490, 505, 560, 686, 707, 784, 808, 980, 1010, 1372, 1414, 1616, 1715, 1960, 2020, 2401, 2744, 2828, 3430, 3535, 3920, 4040, 4802, 4949, 5488, 5656, 6860, 7070, 8080, 9604, 9898, 11312, 12005, 13720, 14140, 19208, 19796, 24010, 24745, 27440, 28280, 34643, 38416, 39592, 48020, 49490, 56560, 69286, 79184, 96040, 98980, 138572, 173215, 192080, 197960, 242501, 277144, 346430, 395920, 485002, 554288, 692860, 970004, 1212505, 1385720, 1940008, 2425010, 2771440, 3880016, 4850020, 9700040, 19400080]

約数ペア:

[(1, 19400080), (2, 9700040), (4, 4850020), (5, 3880016), (7, 2771440), (8, 2425010), (10, 1940008), (14, 1385720), (16, 1212505), (20, 970004), (28, 692860), (35, 554288), (40, 485002), (49, 395920), (56, 346430), (70, 277144), (80, 242501), (98, 197960), (101, 192080), (112, 173215), (140, 138572), (196, 98980), (202, 96040), (245, 79184), (280, 69286), (343, 56560), (392, 49490), (404, 48020), (490, 39592), (505, 38416), (560, 34643), (686, 28280), (707, 27440), (784, 24745), (808, 24010), (980, 19796), (1010, 19208), (1372, 14140), (1414, 13720), (1616, 12005), (1715, 11312), (1960, 9898), (2020, 9604), (2401, 8080), (2744, 7070), (2828, 6860), (3430, 5656), (3535, 5488), (3920, 4949), (4040, 4802)]