21044984840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{619}}^1\times {\mathrm{77269}}^1$

素因数の和:77910

約数の個数: 64

約数和(自身を含む): 51739992000

約数和(自身を除く): 30695007160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 619, 1238, 2476, 3095, 4952, 6190, 6809, 12380, 13618, 24760, 27236, 34045, 54472, 68090, 77269, 136180, 154538, 272360, 309076, 386345, 618152, 772690, 849959, 1545380, 1699918, 3090760, 3399836, 4249795, 6799672, 8499590, 16999180, 33998360, 47829511, 95659022, 191318044, 239147555, 382636088, 478295110, 526124621, 956590220, 1052249242, 1913180440, 2104498484, 2630623105, 4208996968, 5261246210, 10522492420, 21044984840]

約数ペア:

[(1, 21044984840), (2, 10522492420), (4, 5261246210), (5, 4208996968), (8, 2630623105), (10, 2104498484), (11, 1913180440), (20, 1052249242), (22, 956590220), (40, 526124621), (44, 478295110), (55, 382636088), (88, 239147555), (110, 191318044), (220, 95659022), (440, 47829511), (619, 33998360), (1238, 16999180), (2476, 8499590), (3095, 6799672), (4952, 4249795), (6190, 3399836), (6809, 3090760), (12380, 1699918), (13618, 1545380), (24760, 849959), (27236, 772690), (34045, 618152), (54472, 386345), (68090, 309076), (77269, 272360), (136180, 154538)]