12121720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23311}}^1$

素因数の和:23335

約数の個数: 32

約数和(自身を含む): 29373120

約数和(自身を除く): 17251400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 23311, 46622, 93244, 116555, 186488, 233110, 303043, 466220, 606086, 932440, 1212172, 1515215, 2424344, 3030430, 6060860, 12121720]

約数ペア:

[(1, 12121720), (2, 6060860), (4, 3030430), (5, 2424344), (8, 1515215), (10, 1212172), (13, 932440), (20, 606086), (26, 466220), (40, 303043), (52, 233110), (65, 186488), (104, 116555), (130, 93244), (260, 46622), (520, 23311)]