128065220

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1\times {\mathrm{263}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 273829248

約数和(自身を除く): 145764028

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 251, 263, 388, 485, 502, 526, 970, 1004, 1052, 1255, 1315, 1940, 2510, 2630, 5020, 5260, 24347, 25511, 48694, 51022, 66013, 97388, 102044, 121735, 127555, 132026, 243470, 255110, 264052, 330065, 486940, 510220, 660130, 1320260, 6403261, 12806522, 25613044, 32016305, 64032610, 128065220]

約数ペア:

[(1, 128065220), (2, 64032610), (4, 32016305), (5, 25613044), (10, 12806522), (20, 6403261), (97, 1320260), (194, 660130), (251, 510220), (263, 486940), (388, 330065), (485, 264052), (502, 255110), (526, 243470), (970, 132026), (1004, 127555), (1052, 121735), (1255, 102044), (1315, 97388), (1940, 66013), (2510, 51022), (2630, 48694), (5020, 25511), (5260, 24347)]