20276720

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2243}}^1$

素因数の和:2369

約数の個数: 40

約数和(自身を含む): 47581776

約数和(自身を除く): 27305056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2243, 2260, 4486, 4520, 8972, 9040, 11215, 17944, 22430, 35888, 44860, 89720, 179440, 253459, 506918, 1013836, 1267295, 2027672, 2534590, 4055344, 5069180, 10138360, 20276720]

約数ペア:

[(1, 20276720), (2, 10138360), (4, 5069180), (5, 4055344), (8, 2534590), (10, 2027672), (16, 1267295), (20, 1013836), (40, 506918), (80, 253459), (113, 179440), (226, 89720), (452, 44860), (565, 35888), (904, 22430), (1130, 17944), (1808, 11215), (2243, 9040), (2260, 8972), (4486, 4520)]