21121080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:189

約数の個数: 128

約数和(自身を含む): 66977280

約数和(自身を除く): 45856200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 67, 71, 74, 111, 120, 134, 142, 148, 185, 201, 213, 222, 268, 284, 296, 335, 355, 370, 402, 426, 444, 536, 555, 568, 670, 710, 740, 804, 852, 888, 1005, 1065, 1110, 1340, 1420, 1480, 1608, 1704, 2010, 2130, 2220, 2479, 2627, 2680, 2840, 4020, 4260, 4440, 4757, 4958, 5254, 7437, 7881, 8040, 8520, 9514, 9916, 10508, 12395, 13135, 14271, 14874, 15762, 19028, 19832, 21016, 23785, 24790, 26270, 28542, 29748, 31524, 37185, 38056, 39405, 47570, 49580, 52540, 57084, 59496, 63048, 71355, 74370, 78810, 95140, 99160, 105080, 114168, 142710, 148740, 157620, 176009, 190280, 285420, 297480, 315240, 352018, 528027, 570840, 704036, 880045, 1056054, 1408072, 1760090, 2112108, 2640135, 3520180, 4224216, 5280270, 7040360, 10560540, 21121080]

約数ペア:

[(1, 21121080), (2, 10560540), (3, 7040360), (4, 5280270), (5, 4224216), (6, 3520180), (8, 2640135), (10, 2112108), (12, 1760090), (15, 1408072), (20, 1056054), (24, 880045), (30, 704036), (37, 570840), (40, 528027), (60, 352018), (67, 315240), (71, 297480), (74, 285420), (111, 190280), (120, 176009), (134, 157620), (142, 148740), (148, 142710), (185, 114168), (201, 105080), (213, 99160), (222, 95140), (268, 78810), (284, 74370), (296, 71355), (335, 63048), (355, 59496), (370, 57084), (402, 52540), (426, 49580), (444, 47570), (536, 39405), (555, 38056), (568, 37185), (670, 31524), (710, 29748), (740, 28542), (804, 26270), (852, 24790), (888, 23785), (1005, 21016), (1065, 19832), (1110, 19028), (1340, 15762), (1420, 14874), (1480, 14271), (1608, 13135), (1704, 12395), (2010, 10508), (2130, 9916), (2220, 9514), (2479, 8520), (2627, 8040), (2680, 7881), (2840, 7437), (4020, 5254), (4260, 4958), (4440, 4757)]