20699580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:499

約数の個数: 96

約数和(自身を含む): 64189440

約数和(自身を除く): 43489860

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 79, 110, 132, 158, 165, 220, 237, 316, 330, 395, 397, 474, 660, 790, 794, 869, 948, 1185, 1191, 1580, 1588, 1738, 1985, 2370, 2382, 2607, 3476, 3970, 4345, 4367, 4740, 4764, 5214, 5955, 7940, 8690, 8734, 10428, 11910, 13035, 13101, 17380, 17468, 21835, 23820, 26070, 26202, 31363, 43670, 52140, 52404, 62726, 65505, 87340, 94089, 125452, 131010, 156815, 188178, 262020, 313630, 344993, 376356, 470445, 627260, 689986, 940890, 1034979, 1379972, 1724965, 1881780, 2069958, 3449930, 4139916, 5174895, 6899860, 10349790, 20699580]

約数ペア:

[(1, 20699580), (2, 10349790), (3, 6899860), (4, 5174895), (5, 4139916), (6, 3449930), (10, 2069958), (11, 1881780), (12, 1724965), (15, 1379972), (20, 1034979), (22, 940890), (30, 689986), (33, 627260), (44, 470445), (55, 376356), (60, 344993), (66, 313630), (79, 262020), (110, 188178), (132, 156815), (158, 131010), (165, 125452), (220, 94089), (237, 87340), (316, 65505), (330, 62726), (395, 52404), (397, 52140), (474, 43670), (660, 31363), (790, 26202), (794, 26070), (869, 23820), (948, 21835), (1185, 17468), (1191, 17380), (1580, 13101), (1588, 13035), (1738, 11910), (1985, 10428), (2370, 8734), (2382, 8690), (2607, 7940), (3476, 5955), (3970, 5214), (4345, 4764), (4367, 4740)]