20904912

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:278

約数の個数: 160

約数和(自身を含む): 71106560

約数和(自身を除く): 50201648

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 31, 36, 42, 48, 54, 56, 62, 63, 72, 84, 93, 108, 112, 124, 126, 144, 168, 186, 189, 216, 217, 223, 248, 252, 279, 336, 372, 378, 432, 434, 446, 496, 504, 558, 651, 669, 744, 756, 837, 868, 892, 1008, 1116, 1302, 1338, 1488, 1512, 1561, 1674, 1736, 1784, 1953, 2007, 2232, 2604, 2676, 3024, 3122, 3348, 3472, 3568, 3906, 4014, 4464, 4683, 5208, 5352, 5859, 6021, 6244, 6696, 6913, 7812, 8028, 9366, 10416, 10704, 11718, 12042, 12488, 13392, 13826, 14049, 15624, 16056, 18732, 20739, 23436, 24084, 24976, 27652, 28098, 31248, 32112, 37464, 41478, 42147, 46872, 48168, 48391, 55304, 56196, 62217, 74928, 82956, 84294, 93744, 96336, 96782, 110608, 112392, 124434, 145173, 165912, 168588, 186651, 193564, 224784, 248868, 290346, 331824, 337176, 373302, 387128, 435519, 497736, 580692, 674352, 746604, 774256, 871038, 995472, 1161384, 1306557, 1493208, 1742076, 2322768, 2613114, 2986416, 3484152, 5226228, 6968304, 10452456, 20904912]

約数ペア:

[(1, 20904912), (2, 10452456), (3, 6968304), (4, 5226228), (6, 3484152), (7, 2986416), (8, 2613114), (9, 2322768), (12, 1742076), (14, 1493208), (16, 1306557), (18, 1161384), (21, 995472), (24, 871038), (27, 774256), (28, 746604), (31, 674352), (36, 580692), (42, 497736), (48, 435519), (54, 387128), (56, 373302), (62, 337176), (63, 331824), (72, 290346), (84, 248868), (93, 224784), (108, 193564), (112, 186651), (124, 168588), (126, 165912), (144, 145173), (168, 124434), (186, 112392), (189, 110608), (216, 96782), (217, 96336), (223, 93744), (248, 84294), (252, 82956), (279, 74928), (336, 62217), (372, 56196), (378, 55304), (432, 48391), (434, 48168), (446, 46872), (496, 42147), (504, 41478), (558, 37464), (651, 32112), (669, 31248), (744, 28098), (756, 27652), (837, 24976), (868, 24084), (892, 23436), (1008, 20739), (1116, 18732), (1302, 16056), (1338, 15624), (1488, 14049), (1512, 13826), (1561, 13392), (1674, 12488), (1736, 12042), (1784, 11718), (1953, 10704), (2007, 10416), (2232, 9366), (2604, 8028), (2676, 7812), (3024, 6913), (3122, 6696), (3348, 6244), (3472, 6021), (3568, 5859), (3906, 5352), (4014, 5208), (4464, 4683)]