21816704

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1873}}^1$

素因数の和:1907

約数の個数: 64

約数和(自身を含む): 53521440

約数和(自身を除く): 31704736

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 1873, 2912, 3746, 5824, 7492, 11648, 13111, 14984, 24349, 26222, 29968, 48698, 52444, 59936, 97396, 104888, 119872, 170443, 194792, 209776, 239744, 340886, 389584, 419552, 681772, 779168, 839104, 1363544, 1558336, 1678208, 2727088, 3116672, 5454176, 10908352, 21816704]

約数ペア:

[(1, 21816704), (2, 10908352), (4, 5454176), (7, 3116672), (8, 2727088), (13, 1678208), (14, 1558336), (16, 1363544), (26, 839104), (28, 779168), (32, 681772), (52, 419552), (56, 389584), (64, 340886), (91, 239744), (104, 209776), (112, 194792), (128, 170443), (182, 119872), (208, 104888), (224, 97396), (364, 59936), (416, 52444), (448, 48698), (728, 29968), (832, 26222), (896, 24349), (1456, 14984), (1664, 13111), (1873, 11648), (2912, 7492), (3746, 5824)]