215202380

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1\times {\mathrm{263}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 458244864

約数和(自身を除く): 243042484

約数列:

[1, 2, 4, 5, 10, 20, 163, 251, 263, 326, 502, 526, 652, 815, 1004, 1052, 1255, 1315, 1630, 2510, 2630, 3260, 5020, 5260, 40913, 42869, 66013, 81826, 85738, 132026, 163652, 171476, 204565, 214345, 264052, 330065, 409130, 428690, 660130, 818260, 857380, 1320260, 10760119, 21520238, 43040476, 53800595, 107601190, 215202380]

約数ペア:

[(1, 215202380), (2, 107601190), (4, 53800595), (5, 43040476), (10, 21520238), (20, 10760119), (163, 1320260), (251, 857380), (263, 818260), (326, 660130), (502, 428690), (526, 409130), (652, 330065), (815, 264052), (1004, 214345), (1052, 204565), (1255, 171476), (1315, 163652), (1630, 132026), (2510, 85738), (2630, 81826), (3260, 66013), (5020, 42869), (5260, 40913)]