25880840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 61205760

約数和(自身を除く): 35324920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 367, 410, 430, 734, 820, 860, 1468, 1640, 1720, 1763, 1835, 2936, 3526, 3670, 7052, 7340, 8815, 14104, 14680, 15047, 15781, 17630, 30094, 31562, 35260, 60188, 63124, 70520, 75235, 78905, 120376, 126248, 150470, 157810, 300940, 315620, 601880, 631240, 647021, 1294042, 2588084, 3235105, 5176168, 6470210, 12940420, 25880840]

約数ペア:

[(1, 25880840), (2, 12940420), (4, 6470210), (5, 5176168), (8, 3235105), (10, 2588084), (20, 1294042), (40, 647021), (41, 631240), (43, 601880), (82, 315620), (86, 300940), (164, 157810), (172, 150470), (205, 126248), (215, 120376), (328, 78905), (344, 75235), (367, 70520), (410, 63124), (430, 60188), (734, 35260), (820, 31562), (860, 30094), (1468, 17630), (1640, 15781), (1720, 15047), (1763, 14680), (1835, 14104), (2936, 8815), (3526, 7340), (3670, 7052)]