20803928

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{479}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 40176000

約数和(自身を除く): 19372072

約数列:

[1, 2, 4, 8, 61, 89, 122, 178, 244, 356, 479, 488, 712, 958, 1916, 3832, 5429, 10858, 21716, 29219, 42631, 43432, 58438, 85262, 116876, 170524, 233752, 341048, 2600491, 5200982, 10401964, 20803928]

約数ペア:

[(1, 20803928), (2, 10401964), (4, 5200982), (8, 2600491), (61, 341048), (89, 233752), (122, 170524), (178, 116876), (244, 85262), (356, 58438), (479, 43432), (488, 42631), (712, 29219), (958, 21716), (1916, 10858), (3832, 5429)]