21064680

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:680

約数の個数: 192

約数和(自身を含む): 84389760

約数和(自身を除く): 63325080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 26, 28, 30, 35, 36, 39, 40, 42, 45, 52, 56, 60, 63, 65, 70, 72, 78, 84, 90, 91, 104, 105, 117, 120, 126, 130, 140, 156, 168, 180, 182, 195, 210, 234, 252, 260, 273, 280, 312, 315, 360, 364, 390, 420, 455, 468, 504, 520, 546, 585, 630, 643, 728, 780, 819, 840, 910, 936, 1092, 1170, 1260, 1286, 1365, 1560, 1638, 1820, 1929, 2184, 2340, 2520, 2572, 2730, 3215, 3276, 3640, 3858, 4095, 4501, 4680, 5144, 5460, 5787, 6430, 6552, 7716, 8190, 8359, 9002, 9645, 10920, 11574, 12860, 13503, 15432, 16380, 16718, 18004, 19290, 22505, 23148, 25077, 25720, 27006, 28935, 32760, 33436, 36008, 38580, 40509, 41795, 45010, 46296, 50154, 54012, 57870, 58513, 66872, 67515, 75231, 77160, 81018, 83590, 90020, 100308, 108024, 115740, 117026, 125385, 135030, 150462, 162036, 167180, 175539, 180040, 200616, 202545, 231480, 234052, 250770, 270060, 292565, 300924, 324072, 334360, 351078, 376155, 405090, 468104, 501540, 526617, 540120, 585130, 601848, 702156, 752310, 810180, 877695, 1003080, 1053234, 1170260, 1404312, 1504620, 1620360, 1755390, 2106468, 2340520, 2633085, 3009240, 3510780, 4212936, 5266170, 7021560, 10532340, 21064680]

約数ペア:

[(1, 21064680), (2, 10532340), (3, 7021560), (4, 5266170), (5, 4212936), (6, 3510780), (7, 3009240), (8, 2633085), (9, 2340520), (10, 2106468), (12, 1755390), (13, 1620360), (14, 1504620), (15, 1404312), (18, 1170260), (20, 1053234), (21, 1003080), (24, 877695), (26, 810180), (28, 752310), (30, 702156), (35, 601848), (36, 585130), (39, 540120), (40, 526617), (42, 501540), (45, 468104), (52, 405090), (56, 376155), (60, 351078), (63, 334360), (65, 324072), (70, 300924), (72, 292565), (78, 270060), (84, 250770), (90, 234052), (91, 231480), (104, 202545), (105, 200616), (117, 180040), (120, 175539), (126, 167180), (130, 162036), (140, 150462), (156, 135030), (168, 125385), (180, 117026), (182, 115740), (195, 108024), (210, 100308), (234, 90020), (252, 83590), (260, 81018), (273, 77160), (280, 75231), (312, 67515), (315, 66872), (360, 58513), (364, 57870), (390, 54012), (420, 50154), (455, 46296), (468, 45010), (504, 41795), (520, 40509), (546, 38580), (585, 36008), (630, 33436), (643, 32760), (728, 28935), (780, 27006), (819, 25720), (840, 25077), (910, 23148), (936, 22505), (1092, 19290), (1170, 18004), (1260, 16718), (1286, 16380), (1365, 15432), (1560, 13503), (1638, 12860), (1820, 11574), (1929, 10920), (2184, 9645), (2340, 9002), (2520, 8359), (2572, 8190), (2730, 7716), (3215, 6552), (3276, 6430), (3640, 5787), (3858, 5460), (4095, 5144), (4501, 4680)]