20823660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{809}}^1$

素因数の和:848

約数の個数: 144

約数和(自身を含む): 74299680

約数和(自身を除く): 53476020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 780, 809, 858, 990, 1170, 1287, 1430, 1618, 1716, 1980, 2145, 2340, 2427, 2574, 2860, 3236, 4045, 4290, 4854, 5148, 6435, 7281, 8090, 8580, 8899, 9708, 10517, 12135, 12870, 14562, 16180, 17798, 21034, 24270, 25740, 26697, 29124, 31551, 35596, 36405, 42068, 44495, 48540, 52585, 53394, 63102, 72810, 80091, 88990, 94653, 105170, 106788, 115687, 126204, 133485, 145620, 157755, 160182, 177980, 189306, 210340, 231374, 266970, 315510, 320364, 347061, 378612, 400455, 462748, 473265, 533940, 578435, 631020, 694122, 800910, 946530, 1041183, 1156870, 1388244, 1601820, 1735305, 1893060, 2082366, 2313740, 3470610, 4164732, 5205915, 6941220, 10411830, 20823660]

約数ペア:

[(1, 20823660), (2, 10411830), (3, 6941220), (4, 5205915), (5, 4164732), (6, 3470610), (9, 2313740), (10, 2082366), (11, 1893060), (12, 1735305), (13, 1601820), (15, 1388244), (18, 1156870), (20, 1041183), (22, 946530), (26, 800910), (30, 694122), (33, 631020), (36, 578435), (39, 533940), (44, 473265), (45, 462748), (52, 400455), (55, 378612), (60, 347061), (65, 320364), (66, 315510), (78, 266970), (90, 231374), (99, 210340), (110, 189306), (117, 177980), (130, 160182), (132, 157755), (143, 145620), (156, 133485), (165, 126204), (180, 115687), (195, 106788), (198, 105170), (220, 94653), (234, 88990), (260, 80091), (286, 72810), (330, 63102), (390, 53394), (396, 52585), (429, 48540), (468, 44495), (495, 42068), (572, 36405), (585, 35596), (660, 31551), (715, 29124), (780, 26697), (809, 25740), (858, 24270), (990, 21034), (1170, 17798), (1287, 16180), (1430, 14562), (1618, 12870), (1716, 12135), (1980, 10517), (2145, 9708), (2340, 8899), (2427, 8580), (2574, 8090), (2860, 7281), (3236, 6435), (4045, 5148), (4290, 4854)]