21509880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{883}}^1$

素因数の和:933

約数の個数: 128

約数和(自身を含む): 76377600

約数和(自身を除く): 54867720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 29, 30, 35, 40, 42, 56, 58, 60, 70, 84, 87, 105, 116, 120, 140, 145, 168, 174, 203, 210, 232, 280, 290, 348, 406, 420, 435, 580, 609, 696, 812, 840, 870, 883, 1015, 1160, 1218, 1624, 1740, 1766, 2030, 2436, 2649, 3045, 3480, 3532, 4060, 4415, 4872, 5298, 6090, 6181, 7064, 8120, 8830, 10596, 12180, 12362, 13245, 17660, 18543, 21192, 24360, 24724, 25607, 26490, 30905, 35320, 37086, 49448, 51214, 52980, 61810, 74172, 76821, 92715, 102428, 105960, 123620, 128035, 148344, 153642, 179249, 185430, 204856, 247240, 256070, 307284, 358498, 370860, 384105, 512140, 537747, 614568, 716996, 741720, 768210, 896245, 1024280, 1075494, 1433992, 1536420, 1792490, 2150988, 2688735, 3072840, 3584980, 4301976, 5377470, 7169960, 10754940, 21509880]

約数ペア:

[(1, 21509880), (2, 10754940), (3, 7169960), (4, 5377470), (5, 4301976), (6, 3584980), (7, 3072840), (8, 2688735), (10, 2150988), (12, 1792490), (14, 1536420), (15, 1433992), (20, 1075494), (21, 1024280), (24, 896245), (28, 768210), (29, 741720), (30, 716996), (35, 614568), (40, 537747), (42, 512140), (56, 384105), (58, 370860), (60, 358498), (70, 307284), (84, 256070), (87, 247240), (105, 204856), (116, 185430), (120, 179249), (140, 153642), (145, 148344), (168, 128035), (174, 123620), (203, 105960), (210, 102428), (232, 92715), (280, 76821), (290, 74172), (348, 61810), (406, 52980), (420, 51214), (435, 49448), (580, 37086), (609, 35320), (696, 30905), (812, 26490), (840, 25607), (870, 24724), (883, 24360), (1015, 21192), (1160, 18543), (1218, 17660), (1624, 13245), (1740, 12362), (1766, 12180), (2030, 10596), (2436, 8830), (2649, 8120), (3045, 7064), (3480, 6181), (3532, 6090), (4060, 5298), (4415, 4872)]