20348640

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1087}}^1$

素因数の和:1121

約数の個数: 144

約数和(自身を含む): 74850048

約数和(自身を除く): 54501408

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1087, 1170, 1248, 1440, 1560, 1872, 2080, 2174, 2340, 3120, 3261, 3744, 4348, 4680, 5435, 6240, 6522, 8696, 9360, 9783, 10870, 13044, 14131, 16305, 17392, 18720, 19566, 21740, 26088, 28262, 32610, 34784, 39132, 42393, 43480, 48915, 52176, 56524, 65220, 70655, 78264, 84786, 86960, 97830, 104352, 113048, 127179, 130440, 141310, 156528, 169572, 173920, 195660, 211965, 226096, 254358, 260880, 282620, 313056, 339144, 391320, 423930, 452192, 508716, 521760, 565240, 635895, 678288, 782640, 847860, 1017432, 1130480, 1271790, 1356576, 1565280, 1695720, 2034864, 2260960, 2543580, 3391440, 4069728, 5087160, 6782880, 10174320, 20348640]

約数ペア:

[(1, 20348640), (2, 10174320), (3, 6782880), (4, 5087160), (5, 4069728), (6, 3391440), (8, 2543580), (9, 2260960), (10, 2034864), (12, 1695720), (13, 1565280), (15, 1356576), (16, 1271790), (18, 1130480), (20, 1017432), (24, 847860), (26, 782640), (30, 678288), (32, 635895), (36, 565240), (39, 521760), (40, 508716), (45, 452192), (48, 423930), (52, 391320), (60, 339144), (65, 313056), (72, 282620), (78, 260880), (80, 254358), (90, 226096), (96, 211965), (104, 195660), (117, 173920), (120, 169572), (130, 156528), (144, 141310), (156, 130440), (160, 127179), (180, 113048), (195, 104352), (208, 97830), (234, 86960), (240, 84786), (260, 78264), (288, 70655), (312, 65220), (360, 56524), (390, 52176), (416, 48915), (468, 43480), (480, 42393), (520, 39132), (585, 34784), (624, 32610), (720, 28262), (780, 26088), (936, 21740), (1040, 19566), (1087, 18720), (1170, 17392), (1248, 16305), (1440, 14131), (1560, 13044), (1872, 10870), (2080, 9783), (2174, 9360), (2340, 8696), (3120, 6522), (3261, 6240), (3744, 5435), (4348, 4680)]