20820884

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{5591}}^1$

素因数の和:5628

約数の個数: 36

約数和(自身を含む): 44624160

約数和(自身を除く): 23803276

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 532, 931, 1862, 3724, 5591, 11182, 22364, 39137, 78274, 106229, 156548, 212458, 273959, 424916, 547918, 743603, 1095836, 1487206, 2974412, 5205221, 10410442, 20820884]

約数ペア:

[(1, 20820884), (2, 10410442), (4, 5205221), (7, 2974412), (14, 1487206), (19, 1095836), (28, 743603), (38, 547918), (49, 424916), (76, 273959), (98, 212458), (133, 156548), (196, 106229), (266, 78274), (532, 39137), (931, 22364), (1862, 11182), (3724, 5591)]