21759760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{313}}^1$

素因数の和:416

約数の個数: 80

約数和(自身を含む): 56067840

約数和(自身を除く): 34308080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 79, 80, 88, 110, 158, 176, 220, 313, 316, 395, 440, 626, 632, 790, 869, 880, 1252, 1264, 1565, 1580, 1738, 2504, 3130, 3160, 3443, 3476, 4345, 5008, 6260, 6320, 6886, 6952, 8690, 12520, 13772, 13904, 17215, 17380, 24727, 25040, 27544, 34430, 34760, 49454, 55088, 68860, 69520, 98908, 123635, 137720, 197816, 247270, 271997, 275440, 395632, 494540, 543994, 989080, 1087988, 1359985, 1978160, 2175976, 2719970, 4351952, 5439940, 10879880, 21759760]

約数ペア:

[(1, 21759760), (2, 10879880), (4, 5439940), (5, 4351952), (8, 2719970), (10, 2175976), (11, 1978160), (16, 1359985), (20, 1087988), (22, 989080), (40, 543994), (44, 494540), (55, 395632), (79, 275440), (80, 271997), (88, 247270), (110, 197816), (158, 137720), (176, 123635), (220, 98908), (313, 69520), (316, 68860), (395, 55088), (440, 49454), (626, 34760), (632, 34430), (790, 27544), (869, 25040), (880, 24727), (1252, 17380), (1264, 17215), (1565, 13904), (1580, 13772), (1738, 12520), (2504, 8690), (3130, 6952), (3160, 6886), (3443, 6320), (3476, 6260), (4345, 5008)]