20669740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:347

約数の個数: 96

約数和(自身を含む): 54923904

約数和(自身を除く): 34254164

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 41, 52, 65, 70, 82, 91, 130, 140, 164, 182, 205, 260, 277, 287, 364, 410, 455, 533, 554, 574, 820, 910, 1066, 1108, 1148, 1385, 1435, 1820, 1939, 2132, 2665, 2770, 2870, 3601, 3731, 3878, 5330, 5540, 5740, 7202, 7462, 7756, 9695, 10660, 11357, 14404, 14924, 18005, 18655, 19390, 22714, 25207, 36010, 37310, 38780, 45428, 50414, 56785, 72020, 74620, 79499, 100828, 113570, 126035, 147641, 158998, 227140, 252070, 295282, 317996, 397495, 504140, 590564, 738205, 794990, 1033487, 1476410, 1589980, 2066974, 2952820, 4133948, 5167435, 10334870, 20669740]

約数ペア:

[(1, 20669740), (2, 10334870), (4, 5167435), (5, 4133948), (7, 2952820), (10, 2066974), (13, 1589980), (14, 1476410), (20, 1033487), (26, 794990), (28, 738205), (35, 590564), (41, 504140), (52, 397495), (65, 317996), (70, 295282), (82, 252070), (91, 227140), (130, 158998), (140, 147641), (164, 126035), (182, 113570), (205, 100828), (260, 79499), (277, 74620), (287, 72020), (364, 56785), (410, 50414), (455, 45428), (533, 38780), (554, 37310), (574, 36010), (820, 25207), (910, 22714), (1066, 19390), (1108, 18655), (1148, 18005), (1385, 14924), (1435, 14404), (1820, 11357), (1939, 10660), (2132, 9695), (2665, 7756), (2770, 7462), (2870, 7202), (3601, 5740), (3731, 5540), (3878, 5330)]