21721266

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:196

約数の個数: 96

約数和(自身を含む): 57028608

約数和(自身を除く): 35307342

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 31, 42, 62, 63, 67, 83, 93, 126, 134, 166, 186, 201, 217, 249, 279, 402, 434, 469, 498, 558, 581, 603, 651, 747, 938, 1162, 1206, 1302, 1407, 1494, 1743, 1953, 2077, 2573, 2814, 3486, 3906, 4154, 4221, 5146, 5229, 5561, 6231, 7719, 8442, 10458, 11122, 12462, 14539, 15438, 16683, 18011, 18693, 23157, 29078, 33366, 36022, 37386, 38927, 43617, 46314, 50049, 54033, 77854, 87234, 100098, 108066, 116781, 130851, 162099, 172391, 233562, 261702, 324198, 344782, 350343, 517173, 700686, 1034346, 1206737, 1551519, 2413474, 3103038, 3620211, 7240422, 10860633, 21721266]

約数ペア:

[(1, 21721266), (2, 10860633), (3, 7240422), (6, 3620211), (7, 3103038), (9, 2413474), (14, 1551519), (18, 1206737), (21, 1034346), (31, 700686), (42, 517173), (62, 350343), (63, 344782), (67, 324198), (83, 261702), (93, 233562), (126, 172391), (134, 162099), (166, 130851), (186, 116781), (201, 108066), (217, 100098), (249, 87234), (279, 77854), (402, 54033), (434, 50049), (469, 46314), (498, 43617), (558, 38927), (581, 37386), (603, 36022), (651, 33366), (747, 29078), (938, 23157), (1162, 18693), (1206, 18011), (1302, 16683), (1407, 15438), (1494, 14539), (1743, 12462), (1953, 11122), (2077, 10458), (2573, 8442), (2814, 7719), (3486, 6231), (3906, 5561), (4154, 5229), (4221, 5146)]