21099320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{607}}^1$

素因数の和:708

約数の個数: 64

約数和(自身を含む): 52531200

約数和(自身を除く): 31431880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 395, 440, 607, 632, 790, 869, 1214, 1580, 1738, 2428, 3035, 3160, 3476, 4345, 4856, 6070, 6677, 6952, 8690, 12140, 13354, 17380, 24280, 26708, 33385, 34760, 47953, 53416, 66770, 95906, 133540, 191812, 239765, 267080, 383624, 479530, 527483, 959060, 1054966, 1918120, 2109932, 2637415, 4219864, 5274830, 10549660, 21099320]

約数ペア:

[(1, 21099320), (2, 10549660), (4, 5274830), (5, 4219864), (8, 2637415), (10, 2109932), (11, 1918120), (20, 1054966), (22, 959060), (40, 527483), (44, 479530), (55, 383624), (79, 267080), (88, 239765), (110, 191812), (158, 133540), (220, 95906), (316, 66770), (395, 53416), (440, 47953), (607, 34760), (632, 33385), (790, 26708), (869, 24280), (1214, 17380), (1580, 13354), (1738, 12140), (2428, 8690), (3035, 6952), (3160, 6677), (3476, 6070), (4345, 4856)]