20768160

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{883}}^1$

素因数の和:915

約数の個数: 144

約数和(自身を含む): 76186656

約数和(自身を除く): 55418496

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 883, 980, 1120, 1176, 1470, 1568, 1680, 1766, 1960, 2352, 2649, 2940, 3360, 3532, 3920, 4415, 4704, 5298, 5880, 6181, 7064, 7840, 8830, 10596, 11760, 12362, 13245, 14128, 17660, 18543, 21192, 23520, 24724, 26490, 28256, 30905, 35320, 37086, 42384, 43267, 49448, 52980, 61810, 70640, 74172, 84768, 86534, 92715, 98896, 105960, 123620, 129801, 141280, 148344, 173068, 185430, 197792, 211920, 216335, 247240, 259602, 296688, 346136, 370860, 423840, 432670, 494480, 519204, 593376, 649005, 692272, 741720, 865340, 988960, 1038408, 1298010, 1384544, 1483440, 1730680, 2076816, 2596020, 2966880, 3461360, 4153632, 5192040, 6922720, 10384080, 20768160]

約数ペア:

[(1, 20768160), (2, 10384080), (3, 6922720), (4, 5192040), (5, 4153632), (6, 3461360), (7, 2966880), (8, 2596020), (10, 2076816), (12, 1730680), (14, 1483440), (15, 1384544), (16, 1298010), (20, 1038408), (21, 988960), (24, 865340), (28, 741720), (30, 692272), (32, 649005), (35, 593376), (40, 519204), (42, 494480), (48, 432670), (49, 423840), (56, 370860), (60, 346136), (70, 296688), (80, 259602), (84, 247240), (96, 216335), (98, 211920), (105, 197792), (112, 185430), (120, 173068), (140, 148344), (147, 141280), (160, 129801), (168, 123620), (196, 105960), (210, 98896), (224, 92715), (240, 86534), (245, 84768), (280, 74172), (294, 70640), (336, 61810), (392, 52980), (420, 49448), (480, 43267), (490, 42384), (560, 37086), (588, 35320), (672, 30905), (735, 28256), (784, 26490), (840, 24724), (883, 23520), (980, 21192), (1120, 18543), (1176, 17660), (1470, 14128), (1568, 13245), (1680, 12362), (1766, 11760), (1960, 10596), (2352, 8830), (2649, 7840), (2940, 7064), (3360, 6181), (3532, 5880), (3920, 5298), (4415, 4704)]