20804950720

素因数分解:

$2^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1226707}}^1$

素因数の和:1226777

約数の個数: 56

約数和(自身を含む): 50476580784

約数和(自身を除く): 29671630064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 160, 212, 265, 320, 424, 530, 848, 1060, 1696, 2120, 3392, 4240, 8480, 16960, 1226707, 2453414, 4906828, 6133535, 9813656, 12267070, 19627312, 24534140, 39254624, 49068280, 65015471, 78509248, 98136560, 130030942, 196273120, 260061884, 325077355, 392546240, 520123768, 650154710, 1040247536, 1300309420, 2080495072, 2600618840, 4160990144, 5201237680, 10402475360, 20804950720]

約数ペア:

[(1, 20804950720), (2, 10402475360), (4, 5201237680), (5, 4160990144), (8, 2600618840), (10, 2080495072), (16, 1300309420), (20, 1040247536), (32, 650154710), (40, 520123768), (53, 392546240), (64, 325077355), (80, 260061884), (106, 196273120), (160, 130030942), (212, 98136560), (265, 78509248), (320, 65015471), (424, 49068280), (530, 39254624), (848, 24534140), (1060, 19627312), (1696, 12267070), (2120, 9813656), (3392, 6133535), (4240, 4906828), (8480, 2453414), (16960, 1226707)]