289487960

素因数分解:

$2^3\times 5^1\times {\mathrm{653}}^1\times {\mathrm{11083}}^1$

素因数の和:11747

約数の個数: 32

約数和(自身を含む): 652404240

約数和(自身を除く): 362916280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 653, 1306, 2612, 3265, 5224, 6530, 11083, 13060, 22166, 26120, 44332, 55415, 88664, 110830, 221660, 443320, 7237199, 14474398, 28948796, 36185995, 57897592, 72371990, 144743980, 289487960]

約数ペア:

[(1, 289487960), (2, 144743980), (4, 72371990), (5, 57897592), (8, 36185995), (10, 28948796), (20, 14474398), (40, 7237199), (653, 443320), (1306, 221660), (2612, 110830), (3265, 88664), (5224, 55415), (6530, 44332), (11083, 26120), (13060, 22166)]