21179340

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1$

素因数の和:469

約数の個数: 192

約数和(自身を含む): 81285120

約数和(自身を除く): 60105780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 52, 54, 60, 63, 65, 70, 78, 84, 90, 91, 105, 108, 117, 126, 130, 135, 140, 156, 180, 182, 189, 195, 210, 234, 252, 260, 270, 273, 315, 351, 364, 378, 390, 420, 431, 455, 468, 540, 546, 585, 630, 702, 756, 780, 819, 862, 910, 945, 1092, 1170, 1260, 1293, 1365, 1404, 1638, 1724, 1755, 1820, 1890, 2155, 2340, 2457, 2586, 2730, 3017, 3276, 3510, 3780, 3879, 4095, 4310, 4914, 5172, 5460, 5603, 6034, 6465, 7020, 7758, 8190, 8620, 9051, 9828, 11206, 11637, 12068, 12285, 12930, 15085, 15516, 16380, 16809, 18102, 19395, 22412, 23274, 24570, 25860, 27153, 28015, 30170, 33618, 36204, 38790, 39221, 45255, 46548, 49140, 50427, 54306, 56030, 58185, 60340, 67236, 77580, 78442, 81459, 84045, 90510, 100854, 108612, 112060, 116370, 117663, 135765, 151281, 156884, 162918, 168090, 181020, 196105, 201708, 232740, 235326, 252135, 271530, 302562, 325836, 336180, 352989, 392210, 407295, 470652, 504270, 543060, 588315, 605124, 705978, 756405, 784420, 814590, 1008540, 1058967, 1176630, 1411956, 1512810, 1629180, 1764945, 2117934, 2353260, 3025620, 3529890, 4235868, 5294835, 7059780, 10589670, 21179340]

約数ペア:

[(1, 21179340), (2, 10589670), (3, 7059780), (4, 5294835), (5, 4235868), (6, 3529890), (7, 3025620), (9, 2353260), (10, 2117934), (12, 1764945), (13, 1629180), (14, 1512810), (15, 1411956), (18, 1176630), (20, 1058967), (21, 1008540), (26, 814590), (27, 784420), (28, 756405), (30, 705978), (35, 605124), (36, 588315), (39, 543060), (42, 504270), (45, 470652), (52, 407295), (54, 392210), (60, 352989), (63, 336180), (65, 325836), (70, 302562), (78, 271530), (84, 252135), (90, 235326), (91, 232740), (105, 201708), (108, 196105), (117, 181020), (126, 168090), (130, 162918), (135, 156884), (140, 151281), (156, 135765), (180, 117663), (182, 116370), (189, 112060), (195, 108612), (210, 100854), (234, 90510), (252, 84045), (260, 81459), (270, 78442), (273, 77580), (315, 67236), (351, 60340), (364, 58185), (378, 56030), (390, 54306), (420, 50427), (431, 49140), (455, 46548), (468, 45255), (540, 39221), (546, 38790), (585, 36204), (630, 33618), (702, 30170), (756, 28015), (780, 27153), (819, 25860), (862, 24570), (910, 23274), (945, 22412), (1092, 19395), (1170, 18102), (1260, 16809), (1293, 16380), (1365, 15516), (1404, 15085), (1638, 12930), (1724, 12285), (1755, 12068), (1820, 11637), (1890, 11206), (2155, 9828), (2340, 9051), (2457, 8620), (2586, 8190), (2730, 7758), (3017, 7020), (3276, 6465), (3510, 6034), (3780, 5603), (3879, 5460), (4095, 5172), (4310, 4914)]