21000427884

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{109}}^2\times {\mathrm{1327}}^1$

素因数の和:1592

約数の個数: 108

約数和(自身を含む): 55065357984

約数和(自身を除く): 34064930100

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 109, 111, 148, 218, 222, 327, 333, 436, 444, 654, 666, 981, 1308, 1327, 1332, 1962, 2654, 3924, 3981, 4033, 5308, 7962, 8066, 11881, 11943, 12099, 15924, 16132, 23762, 23886, 24198, 35643, 36297, 47524, 47772, 48396, 49099, 71286, 72594, 98198, 106929, 142572, 144643, 145188, 147297, 196396, 213858, 289286, 294594, 427716, 433929, 439597, 441891, 578572, 589188, 867858, 879194, 883782, 1301787, 1318791, 1735716, 1758388, 1767564, 2603574, 2637582, 3956373, 5207148, 5275164, 5351791, 7912746, 10703582, 15766087, 15825492, 16055373, 21407164, 31532174, 32110746, 47298261, 48166119, 63064348, 64221492, 94596522, 96332238, 141894783, 189193044, 192664476, 283789566, 567579132, 583345219, 1166690438, 1750035657, 2333380876, 3500071314, 5250106971, 7000142628, 10500213942, 21000427884]

約数ペア:

[(1, 21000427884), (2, 10500213942), (3, 7000142628), (4, 5250106971), (6, 3500071314), (9, 2333380876), (12, 1750035657), (18, 1166690438), (36, 583345219), (37, 567579132), (74, 283789566), (109, 192664476), (111, 189193044), (148, 141894783), (218, 96332238), (222, 94596522), (327, 64221492), (333, 63064348), (436, 48166119), (444, 47298261), (654, 32110746), (666, 31532174), (981, 21407164), (1308, 16055373), (1327, 15825492), (1332, 15766087), (1962, 10703582), (2654, 7912746), (3924, 5351791), (3981, 5275164), (4033, 5207148), (5308, 3956373), (7962, 2637582), (8066, 2603574), (11881, 1767564), (11943, 1758388), (12099, 1735716), (15924, 1318791), (16132, 1301787), (23762, 883782), (23886, 879194), (24198, 867858), (35643, 589188), (36297, 578572), (47524, 441891), (47772, 439597), (48396, 433929), (49099, 427716), (71286, 294594), (72594, 289286), (98198, 213858), (106929, 196396), (142572, 147297), (144643, 145188)]