20563140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{643}}^1$

素因数の和:709

約数の個数: 96

約数和(自身を含む): 63616896

約数和(自身を除く): 43053756

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 41, 52, 60, 65, 78, 82, 123, 130, 156, 164, 195, 205, 246, 260, 390, 410, 492, 533, 615, 643, 780, 820, 1066, 1230, 1286, 1599, 1929, 2132, 2460, 2572, 2665, 3198, 3215, 3858, 5330, 6396, 6430, 7716, 7995, 8359, 9645, 10660, 12860, 15990, 16718, 19290, 25077, 26363, 31980, 33436, 38580, 41795, 50154, 52726, 79089, 83590, 100308, 105452, 125385, 131815, 158178, 167180, 250770, 263630, 316356, 342719, 395445, 501540, 527260, 685438, 790890, 1028157, 1370876, 1581780, 1713595, 2056314, 3427190, 4112628, 5140785, 6854380, 10281570, 20563140]

約数ペア:

[(1, 20563140), (2, 10281570), (3, 6854380), (4, 5140785), (5, 4112628), (6, 3427190), (10, 2056314), (12, 1713595), (13, 1581780), (15, 1370876), (20, 1028157), (26, 790890), (30, 685438), (39, 527260), (41, 501540), (52, 395445), (60, 342719), (65, 316356), (78, 263630), (82, 250770), (123, 167180), (130, 158178), (156, 131815), (164, 125385), (195, 105452), (205, 100308), (246, 83590), (260, 79089), (390, 52726), (410, 50154), (492, 41795), (533, 38580), (615, 33436), (643, 31980), (780, 26363), (820, 25077), (1066, 19290), (1230, 16718), (1286, 15990), (1599, 12860), (1929, 10660), (2132, 9645), (2460, 8359), (2572, 7995), (2665, 7716), (3198, 6430), (3215, 6396), (3858, 5330)]