78204160

素因数分解:

$2^8\times 5^1\times {\mathrm{107}}^1\times {\mathrm{571}}^1$

素因数の和:699

約数の個数: 72

約数和(自身を含む): 189405216

約数和(自身を除く): 111201056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 160, 214, 256, 320, 428, 535, 571, 640, 856, 1070, 1142, 1280, 1712, 2140, 2284, 2855, 3424, 4280, 4568, 5710, 6848, 8560, 9136, 11420, 13696, 17120, 18272, 22840, 27392, 34240, 36544, 45680, 61097, 68480, 73088, 91360, 122194, 136960, 146176, 182720, 244388, 305485, 365440, 488776, 610970, 730880, 977552, 1221940, 1955104, 2443880, 3910208, 4887760, 7820416, 9775520, 15640832, 19551040, 39102080, 78204160]

約数ペア:

[(1, 78204160), (2, 39102080), (4, 19551040), (5, 15640832), (8, 9775520), (10, 7820416), (16, 4887760), (20, 3910208), (32, 2443880), (40, 1955104), (64, 1221940), (80, 977552), (107, 730880), (128, 610970), (160, 488776), (214, 365440), (256, 305485), (320, 244388), (428, 182720), (535, 146176), (571, 136960), (640, 122194), (856, 91360), (1070, 73088), (1142, 68480), (1280, 61097), (1712, 45680), (2140, 36544), (2284, 34240), (2855, 27392), (3424, 22840), (4280, 18272), (4568, 17120), (5710, 13696), (6848, 11420), (8560, 9136)]