20199984

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{761}}^1$

素因数の和:858

約数の個数: 80

約数和(自身を含む): 60472320

約数和(自身を除く): 40272336

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 79, 84, 112, 158, 168, 237, 316, 336, 474, 553, 632, 761, 948, 1106, 1264, 1522, 1659, 1896, 2212, 2283, 3044, 3318, 3792, 4424, 4566, 5327, 6088, 6636, 8848, 9132, 10654, 12176, 13272, 15981, 18264, 21308, 26544, 31962, 36528, 42616, 60119, 63924, 85232, 120238, 127848, 180357, 240476, 255696, 360714, 420833, 480952, 721428, 841666, 961904, 1262499, 1442856, 1683332, 2524998, 2885712, 3366664, 5049996, 6733328, 10099992, 20199984]

約数ペア:

[(1, 20199984), (2, 10099992), (3, 6733328), (4, 5049996), (6, 3366664), (7, 2885712), (8, 2524998), (12, 1683332), (14, 1442856), (16, 1262499), (21, 961904), (24, 841666), (28, 721428), (42, 480952), (48, 420833), (56, 360714), (79, 255696), (84, 240476), (112, 180357), (158, 127848), (168, 120238), (237, 85232), (316, 63924), (336, 60119), (474, 42616), (553, 36528), (632, 31962), (761, 26544), (948, 21308), (1106, 18264), (1264, 15981), (1522, 13272), (1659, 12176), (1896, 10654), (2212, 9132), (2283, 8848), (3044, 6636), (3318, 6088), (3792, 5327), (4424, 4566)]