20985552

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 120

約数和(自身を含む): 68090880

約数和(自身を除く): 47105328

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 84, 109, 112, 126, 144, 168, 191, 218, 252, 327, 336, 382, 436, 504, 573, 654, 763, 764, 872, 981, 1008, 1146, 1308, 1337, 1526, 1528, 1719, 1744, 1962, 2289, 2292, 2616, 2674, 3052, 3056, 3438, 3924, 4011, 4578, 4584, 5232, 5348, 6104, 6867, 6876, 7848, 8022, 9156, 9168, 10696, 12033, 12208, 13734, 13752, 15696, 16044, 18312, 20819, 21392, 24066, 27468, 27504, 32088, 36624, 41638, 48132, 54936, 62457, 64176, 83276, 96264, 109872, 124914, 145733, 166552, 187371, 192528, 249828, 291466, 333104, 374742, 437199, 499656, 582932, 749484, 874398, 999312, 1165864, 1311597, 1498968, 1748796, 2331728, 2623194, 2997936, 3497592, 5246388, 6995184, 10492776, 20985552]

約数ペア:

[(1, 20985552), (2, 10492776), (3, 6995184), (4, 5246388), (6, 3497592), (7, 2997936), (8, 2623194), (9, 2331728), (12, 1748796), (14, 1498968), (16, 1311597), (18, 1165864), (21, 999312), (24, 874398), (28, 749484), (36, 582932), (42, 499656), (48, 437199), (56, 374742), (63, 333104), (72, 291466), (84, 249828), (109, 192528), (112, 187371), (126, 166552), (144, 145733), (168, 124914), (191, 109872), (218, 96264), (252, 83276), (327, 64176), (336, 62457), (382, 54936), (436, 48132), (504, 41638), (573, 36624), (654, 32088), (763, 27504), (764, 27468), (872, 24066), (981, 21392), (1008, 20819), (1146, 18312), (1308, 16044), (1337, 15696), (1526, 13752), (1528, 13734), (1719, 12208), (1744, 12033), (1962, 10696), (2289, 9168), (2292, 9156), (2616, 8022), (2674, 7848), (3052, 6876), (3056, 6867), (3438, 6104), (3924, 5348), (4011, 5232), (4578, 4584)]