21180640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{599}}^1$

素因数の和:644

約数の個数: 96

約数和(自身を含む): 57153600

約数和(自身を除く): 35972960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 160, 170, 208, 221, 260, 272, 340, 416, 442, 520, 544, 599, 680, 884, 1040, 1105, 1198, 1360, 1768, 2080, 2210, 2396, 2720, 2995, 3536, 4420, 4792, 5990, 7072, 7787, 8840, 9584, 10183, 11980, 15574, 17680, 19168, 20366, 23960, 31148, 35360, 38935, 40732, 47920, 50915, 62296, 77870, 81464, 95840, 101830, 124592, 132379, 155740, 162928, 203660, 249184, 264758, 311480, 325856, 407320, 529516, 622960, 661895, 814640, 1059032, 1245920, 1323790, 1629280, 2118064, 2647580, 4236128, 5295160, 10590320, 21180640]

約数ペア:

[(1, 21180640), (2, 10590320), (4, 5295160), (5, 4236128), (8, 2647580), (10, 2118064), (13, 1629280), (16, 1323790), (17, 1245920), (20, 1059032), (26, 814640), (32, 661895), (34, 622960), (40, 529516), (52, 407320), (65, 325856), (68, 311480), (80, 264758), (85, 249184), (104, 203660), (130, 162928), (136, 155740), (160, 132379), (170, 124592), (208, 101830), (221, 95840), (260, 81464), (272, 77870), (340, 62296), (416, 50915), (442, 47920), (520, 40732), (544, 38935), (599, 35360), (680, 31148), (884, 23960), (1040, 20366), (1105, 19168), (1198, 17680), (1360, 15574), (1768, 11980), (2080, 10183), (2210, 9584), (2396, 8840), (2720, 7787), (2995, 7072), (3536, 5990), (4420, 4792)]