21643986

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{809}}^1$

素因数の和:848

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 32788014

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 343, 546, 637, 686, 809, 1029, 1274, 1618, 1911, 2058, 2427, 3822, 4459, 4854, 5663, 8918, 10517, 11326, 13377, 16989, 21034, 26754, 31551, 33978, 39641, 63102, 73619, 79282, 118923, 147238, 220857, 237846, 277487, 441714, 515333, 554974, 832461, 1030666, 1545999, 1664922, 3091998, 3607331, 7214662, 10821993, 21643986]

約数ペア:

[(1, 21643986), (2, 10821993), (3, 7214662), (6, 3607331), (7, 3091998), (13, 1664922), (14, 1545999), (21, 1030666), (26, 832461), (39, 554974), (42, 515333), (49, 441714), (78, 277487), (91, 237846), (98, 220857), (147, 147238), (182, 118923), (273, 79282), (294, 73619), (343, 63102), (546, 39641), (637, 33978), (686, 31551), (809, 26754), (1029, 21034), (1274, 16989), (1618, 13377), (1911, 11326), (2058, 10517), (2427, 8918), (3822, 5663), (4459, 4854)]