20507872

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:105

約数の個数: 144

約数和(自身を含む): 54295920

約数和(自身を除く): 33788048

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 29, 32, 41, 44, 49, 56, 58, 77, 82, 88, 98, 112, 116, 154, 164, 176, 196, 203, 224, 232, 287, 308, 319, 328, 352, 392, 406, 451, 464, 539, 574, 616, 638, 656, 784, 812, 902, 928, 1078, 1148, 1189, 1232, 1276, 1312, 1421, 1568, 1624, 1804, 2009, 2156, 2233, 2296, 2378, 2464, 2552, 2842, 3157, 3248, 3608, 4018, 4312, 4466, 4592, 4756, 5104, 5684, 6314, 6496, 7216, 8036, 8323, 8624, 8932, 9184, 9512, 10208, 11368, 12628, 13079, 14432, 15631, 16072, 16646, 17248, 17864, 19024, 22099, 22736, 25256, 26158, 31262, 32144, 33292, 35728, 38048, 44198, 45472, 50512, 52316, 58261, 62524, 64288, 66584, 71456, 88396, 91553, 101024, 104632, 116522, 125048, 133168, 176792, 183106, 209264, 233044, 250096, 266336, 353584, 366212, 418528, 466088, 500192, 640871, 707168, 732424, 932176, 1281742, 1464848, 1864352, 2563484, 2929696, 5126968, 10253936, 20507872]

約数ペア:

[(1, 20507872), (2, 10253936), (4, 5126968), (7, 2929696), (8, 2563484), (11, 1864352), (14, 1464848), (16, 1281742), (22, 932176), (28, 732424), (29, 707168), (32, 640871), (41, 500192), (44, 466088), (49, 418528), (56, 366212), (58, 353584), (77, 266336), (82, 250096), (88, 233044), (98, 209264), (112, 183106), (116, 176792), (154, 133168), (164, 125048), (176, 116522), (196, 104632), (203, 101024), (224, 91553), (232, 88396), (287, 71456), (308, 66584), (319, 64288), (328, 62524), (352, 58261), (392, 52316), (406, 50512), (451, 45472), (464, 44198), (539, 38048), (574, 35728), (616, 33292), (638, 32144), (656, 31262), (784, 26158), (812, 25256), (902, 22736), (928, 22099), (1078, 19024), (1148, 17864), (1189, 17248), (1232, 16646), (1276, 16072), (1312, 15631), (1421, 14432), (1568, 13079), (1624, 12628), (1804, 11368), (2009, 10208), (2156, 9512), (2233, 9184), (2296, 8932), (2378, 8624), (2464, 8323), (2552, 8036), (2842, 7216), (3157, 6496), (3248, 6314), (3608, 5684), (4018, 5104), (4312, 4756), (4466, 4592)]