20112820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:329

約数の個数: 96

約数和(自身を含む): 53399808

約数和(自身を除く): 33286988

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 43, 52, 65, 70, 86, 91, 130, 140, 172, 182, 215, 257, 260, 301, 364, 430, 455, 514, 559, 602, 860, 910, 1028, 1118, 1204, 1285, 1505, 1799, 1820, 2236, 2570, 2795, 3010, 3341, 3598, 3913, 5140, 5590, 6020, 6682, 7196, 7826, 8995, 11051, 11180, 13364, 15652, 16705, 17990, 19565, 22102, 23387, 33410, 35980, 39130, 44204, 46774, 55255, 66820, 77357, 78260, 93548, 110510, 116935, 143663, 154714, 221020, 233870, 287326, 309428, 386785, 467740, 574652, 718315, 773570, 1005641, 1436630, 1547140, 2011282, 2873260, 4022564, 5028205, 10056410, 20112820]

約数ペア:

[(1, 20112820), (2, 10056410), (4, 5028205), (5, 4022564), (7, 2873260), (10, 2011282), (13, 1547140), (14, 1436630), (20, 1005641), (26, 773570), (28, 718315), (35, 574652), (43, 467740), (52, 386785), (65, 309428), (70, 287326), (86, 233870), (91, 221020), (130, 154714), (140, 143663), (172, 116935), (182, 110510), (215, 93548), (257, 78260), (260, 77357), (301, 66820), (364, 55255), (430, 46774), (455, 44204), (514, 39130), (559, 35980), (602, 33410), (860, 23387), (910, 22102), (1028, 19565), (1118, 17990), (1204, 16705), (1285, 15652), (1505, 13364), (1799, 11180), (1820, 11051), (2236, 8995), (2570, 7826), (2795, 7196), (3010, 6682), (3341, 6020), (3598, 5590), (3913, 5140)]