20943216

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:363

約数の個数: 120

約数和(自身を含む): 68090880

約数和(自身を除く): 47147664

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 79, 84, 112, 126, 144, 158, 168, 237, 252, 263, 316, 336, 474, 504, 526, 553, 632, 711, 789, 948, 1008, 1052, 1106, 1264, 1422, 1578, 1659, 1841, 1896, 2104, 2212, 2367, 2844, 3156, 3318, 3682, 3792, 4208, 4424, 4734, 4977, 5523, 5688, 6312, 6636, 7364, 8848, 9468, 9954, 11046, 11376, 12624, 13272, 14728, 16569, 18936, 19908, 20777, 22092, 26544, 29456, 33138, 37872, 39816, 41554, 44184, 62331, 66276, 79632, 83108, 88368, 124662, 132552, 145439, 166216, 186993, 249324, 265104, 290878, 332432, 373986, 436317, 498648, 581756, 747972, 872634, 997296, 1163512, 1308951, 1495944, 1745268, 2327024, 2617902, 2991888, 3490536, 5235804, 6981072, 10471608, 20943216]

約数ペア:

[(1, 20943216), (2, 10471608), (3, 6981072), (4, 5235804), (6, 3490536), (7, 2991888), (8, 2617902), (9, 2327024), (12, 1745268), (14, 1495944), (16, 1308951), (18, 1163512), (21, 997296), (24, 872634), (28, 747972), (36, 581756), (42, 498648), (48, 436317), (56, 373986), (63, 332432), (72, 290878), (79, 265104), (84, 249324), (112, 186993), (126, 166216), (144, 145439), (158, 132552), (168, 124662), (237, 88368), (252, 83108), (263, 79632), (316, 66276), (336, 62331), (474, 44184), (504, 41554), (526, 39816), (553, 37872), (632, 33138), (711, 29456), (789, 26544), (948, 22092), (1008, 20777), (1052, 19908), (1106, 18936), (1264, 16569), (1422, 14728), (1578, 13272), (1659, 12624), (1841, 11376), (1896, 11046), (2104, 9954), (2212, 9468), (2367, 8848), (2844, 7364), (3156, 6636), (3318, 6312), (3682, 5688), (3792, 5523), (4208, 4977), (4424, 4734)]