20121720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{2297}}^1$

素因数の和:2384

約数の個数: 64

約数和(自身を含む): 61218720

約数和(自身を除く): 41097000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 73, 120, 146, 219, 292, 365, 438, 584, 730, 876, 1095, 1460, 1752, 2190, 2297, 2920, 4380, 4594, 6891, 8760, 9188, 11485, 13782, 18376, 22970, 27564, 34455, 45940, 55128, 68910, 91880, 137820, 167681, 275640, 335362, 503043, 670724, 838405, 1006086, 1341448, 1676810, 2012172, 2515215, 3353620, 4024344, 5030430, 6707240, 10060860, 20121720]

約数ペア:

[(1, 20121720), (2, 10060860), (3, 6707240), (4, 5030430), (5, 4024344), (6, 3353620), (8, 2515215), (10, 2012172), (12, 1676810), (15, 1341448), (20, 1006086), (24, 838405), (30, 670724), (40, 503043), (60, 335362), (73, 275640), (120, 167681), (146, 137820), (219, 91880), (292, 68910), (365, 55128), (438, 45940), (584, 34455), (730, 27564), (876, 22970), (1095, 18376), (1460, 13782), (1752, 11485), (2190, 9188), (2297, 8760), (2920, 6891), (4380, 4594)]