20555808

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{181}}^1$

素因数の和:227

約数の個数: 144

約数和(自身を含む): 67144896

約数和(自身を除く): 46589088

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 52, 56, 78, 84, 91, 96, 104, 112, 156, 168, 169, 181, 182, 208, 224, 273, 312, 336, 338, 362, 364, 416, 507, 543, 546, 624, 672, 676, 724, 728, 1014, 1086, 1092, 1183, 1248, 1267, 1352, 1448, 1456, 2028, 2172, 2184, 2353, 2366, 2534, 2704, 2896, 2912, 3549, 3801, 4056, 4344, 4368, 4706, 4732, 5068, 5408, 5792, 7059, 7098, 7602, 8112, 8688, 8736, 9412, 9464, 10136, 14118, 14196, 15204, 16224, 16471, 17376, 18824, 18928, 20272, 28236, 28392, 30408, 30589, 32942, 37648, 37856, 40544, 49413, 56472, 56784, 60816, 61178, 65884, 75296, 91767, 98826, 112944, 113568, 121632, 122356, 131768, 183534, 197652, 214123, 225888, 244712, 263536, 367068, 395304, 428246, 489424, 527072, 642369, 734136, 790608, 856492, 978848, 1284738, 1468272, 1581216, 1712984, 2569476, 2936544, 3425968, 5138952, 6851936, 10277904, 20555808]

約数ペア:

[(1, 20555808), (2, 10277904), (3, 6851936), (4, 5138952), (6, 3425968), (7, 2936544), (8, 2569476), (12, 1712984), (13, 1581216), (14, 1468272), (16, 1284738), (21, 978848), (24, 856492), (26, 790608), (28, 734136), (32, 642369), (39, 527072), (42, 489424), (48, 428246), (52, 395304), (56, 367068), (78, 263536), (84, 244712), (91, 225888), (96, 214123), (104, 197652), (112, 183534), (156, 131768), (168, 122356), (169, 121632), (181, 113568), (182, 112944), (208, 98826), (224, 91767), (273, 75296), (312, 65884), (336, 61178), (338, 60816), (362, 56784), (364, 56472), (416, 49413), (507, 40544), (543, 37856), (546, 37648), (624, 32942), (672, 30589), (676, 30408), (724, 28392), (728, 28236), (1014, 20272), (1086, 18928), (1092, 18824), (1183, 17376), (1248, 16471), (1267, 16224), (1352, 15204), (1448, 14196), (1456, 14118), (2028, 10136), (2172, 9464), (2184, 9412), (2353, 8736), (2366, 8688), (2534, 8112), (2704, 7602), (2896, 7098), (2912, 7059), (3549, 5792), (3801, 5408), (4056, 5068), (4344, 4732), (4368, 4706)]