20690904

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:169

約数の個数: 128

約数和(自身を含む): 60963840

約数和(自身を除く): 40272936

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 17, 24, 26, 34, 39, 47, 51, 52, 68, 78, 83, 94, 102, 104, 136, 141, 156, 166, 188, 204, 221, 249, 282, 312, 332, 376, 408, 442, 498, 564, 611, 663, 664, 799, 884, 996, 1079, 1128, 1222, 1326, 1411, 1598, 1768, 1833, 1992, 2158, 2397, 2444, 2652, 2822, 3196, 3237, 3666, 3901, 4233, 4316, 4794, 4888, 5304, 5644, 6392, 6474, 7332, 7802, 8466, 8632, 9588, 10387, 11288, 11703, 12948, 14664, 15604, 16932, 18343, 19176, 20774, 23406, 25896, 31161, 31208, 33864, 36686, 41548, 46812, 50713, 55029, 62322, 66317, 73372, 83096, 93624, 101426, 110058, 124644, 132634, 146744, 152139, 198951, 202852, 220116, 249288, 265268, 304278, 397902, 405704, 440232, 530536, 608556, 795804, 862121, 1217112, 1591608, 1724242, 2586363, 3448484, 5172726, 6896968, 10345452, 20690904]

約数ペア:

[(1, 20690904), (2, 10345452), (3, 6896968), (4, 5172726), (6, 3448484), (8, 2586363), (12, 1724242), (13, 1591608), (17, 1217112), (24, 862121), (26, 795804), (34, 608556), (39, 530536), (47, 440232), (51, 405704), (52, 397902), (68, 304278), (78, 265268), (83, 249288), (94, 220116), (102, 202852), (104, 198951), (136, 152139), (141, 146744), (156, 132634), (166, 124644), (188, 110058), (204, 101426), (221, 93624), (249, 83096), (282, 73372), (312, 66317), (332, 62322), (376, 55029), (408, 50713), (442, 46812), (498, 41548), (564, 36686), (611, 33864), (663, 31208), (664, 31161), (799, 25896), (884, 23406), (996, 20774), (1079, 19176), (1128, 18343), (1222, 16932), (1326, 15604), (1411, 14664), (1598, 12948), (1768, 11703), (1833, 11288), (1992, 10387), (2158, 9588), (2397, 8632), (2444, 8466), (2652, 7802), (2822, 7332), (3196, 6474), (3237, 6392), (3666, 5644), (3901, 5304), (4233, 4888), (4316, 4794)]