21296340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:526

約数の個数: 144

約数和(自身を含む): 73382400

約数和(自身を除く): 52086060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 479, 494, 570, 585, 684, 741, 780, 855, 958, 988, 1140, 1170, 1235, 1437, 1482, 1710, 1916, 2223, 2340, 2395, 2470, 2874, 2964, 3420, 3705, 4311, 4446, 4790, 4940, 5748, 6227, 7185, 7410, 8622, 8892, 9101, 9580, 11115, 12454, 14370, 14820, 17244, 18202, 18681, 21555, 22230, 24908, 27303, 28740, 31135, 36404, 37362, 43110, 44460, 45505, 54606, 56043, 62270, 74724, 81909, 86220, 91010, 93405, 109212, 112086, 118313, 124540, 136515, 163818, 182020, 186810, 224172, 236626, 273030, 280215, 327636, 354939, 373620, 409545, 473252, 546060, 560430, 591565, 709878, 819090, 1064817, 1120860, 1183130, 1419756, 1638180, 1774695, 2129634, 2366260, 3549390, 4259268, 5324085, 7098780, 10648170, 21296340]

約数ペア:

[(1, 21296340), (2, 10648170), (3, 7098780), (4, 5324085), (5, 4259268), (6, 3549390), (9, 2366260), (10, 2129634), (12, 1774695), (13, 1638180), (15, 1419756), (18, 1183130), (19, 1120860), (20, 1064817), (26, 819090), (30, 709878), (36, 591565), (38, 560430), (39, 546060), (45, 473252), (52, 409545), (57, 373620), (60, 354939), (65, 327636), (76, 280215), (78, 273030), (90, 236626), (95, 224172), (114, 186810), (117, 182020), (130, 163818), (156, 136515), (171, 124540), (180, 118313), (190, 112086), (195, 109212), (228, 93405), (234, 91010), (247, 86220), (260, 81909), (285, 74724), (342, 62270), (380, 56043), (390, 54606), (468, 45505), (479, 44460), (494, 43110), (570, 37362), (585, 36404), (684, 31135), (741, 28740), (780, 27303), (855, 24908), (958, 22230), (988, 21555), (1140, 18681), (1170, 18202), (1235, 17244), (1437, 14820), (1482, 14370), (1710, 12454), (1916, 11115), (2223, 9580), (2340, 9101), (2395, 8892), (2470, 8622), (2874, 7410), (2964, 7185), (3420, 6227), (3705, 5748), (4311, 4940), (4446, 4790)]