21329316

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 56434560

約数和(自身を除く): 35105244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 67, 74, 111, 134, 148, 201, 222, 239, 268, 333, 402, 444, 478, 603, 666, 717, 804, 956, 1206, 1332, 1434, 2151, 2412, 2479, 2868, 4302, 4958, 7437, 8604, 8843, 9916, 14874, 16013, 17686, 22311, 26529, 29748, 32026, 35372, 44622, 48039, 53058, 64052, 79587, 89244, 96078, 106116, 144117, 159174, 192156, 288234, 318348, 576468, 592481, 1184962, 1777443, 2369924, 3554886, 5332329, 7109772, 10664658, 21329316]

約数ペア:

[(1, 21329316), (2, 10664658), (3, 7109772), (4, 5332329), (6, 3554886), (9, 2369924), (12, 1777443), (18, 1184962), (36, 592481), (37, 576468), (67, 318348), (74, 288234), (111, 192156), (134, 159174), (148, 144117), (201, 106116), (222, 96078), (239, 89244), (268, 79587), (333, 64052), (402, 53058), (444, 48039), (478, 44622), (603, 35372), (666, 32026), (717, 29748), (804, 26529), (956, 22311), (1206, 17686), (1332, 16013), (1434, 14874), (2151, 9916), (2412, 8843), (2479, 8604), (2868, 7437), (4302, 4958)]