21487210

素因数分解:

$2^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{461}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 18429590

約数列:

[1, 2, 5, 10, 59, 79, 118, 158, 295, 395, 461, 590, 790, 922, 2305, 4610, 4661, 9322, 23305, 27199, 36419, 46610, 54398, 72838, 135995, 182095, 271990, 364190, 2148721, 4297442, 10743605, 21487210]

約数ペア:

[(1, 21487210), (2, 10743605), (5, 4297442), (10, 2148721), (59, 364190), (79, 271990), (118, 182095), (158, 135995), (295, 72838), (395, 54398), (461, 46610), (590, 36419), (790, 27199), (922, 23305), (2305, 9322), (4610, 4661)]