20372080

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6211}}^1$

素因数の和:6265

約数の個数: 40

約数和(自身を含む): 48528144

約数和(自身を除く): 28156064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6211, 12422, 24844, 31055, 49688, 62110, 99376, 124220, 248440, 254651, 496880, 509302, 1018604, 1273255, 2037208, 2546510, 4074416, 5093020, 10186040, 20372080]

約数ペア:

[(1, 20372080), (2, 10186040), (4, 5093020), (5, 4074416), (8, 2546510), (10, 2037208), (16, 1273255), (20, 1018604), (40, 509302), (41, 496880), (80, 254651), (82, 248440), (164, 124220), (205, 99376), (328, 62110), (410, 49688), (656, 31055), (820, 24844), (1640, 12422), (3280, 6211)]