12271220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{433}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 28071120

約数和(自身を除く): 15799900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 433, 436, 545, 866, 1090, 1417, 1732, 2165, 2180, 2834, 4330, 5629, 5668, 7085, 8660, 11258, 14170, 22516, 28145, 28340, 47197, 56290, 94394, 112580, 188788, 235985, 471970, 613561, 943940, 1227122, 2454244, 3067805, 6135610, 12271220]

約数ペア:

[(1, 12271220), (2, 6135610), (4, 3067805), (5, 2454244), (10, 1227122), (13, 943940), (20, 613561), (26, 471970), (52, 235985), (65, 188788), (109, 112580), (130, 94394), (218, 56290), (260, 47197), (433, 28340), (436, 28145), (545, 22516), (866, 14170), (1090, 11258), (1417, 8660), (1732, 7085), (2165, 5668), (2180, 5629), (2834, 4330)]