21725172

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:160

約数の個数: 144

約数和(自身を含む): 67837952

約数和(自身を除く): 46112780

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 31, 36, 42, 54, 62, 63, 81, 84, 93, 103, 108, 124, 126, 162, 186, 189, 206, 217, 243, 252, 279, 309, 324, 372, 378, 412, 434, 486, 558, 567, 618, 651, 721, 756, 837, 868, 927, 972, 1116, 1134, 1236, 1302, 1442, 1674, 1701, 1854, 1953, 2163, 2268, 2511, 2604, 2781, 2884, 3193, 3348, 3402, 3708, 3906, 4326, 5022, 5562, 5859, 6386, 6489, 6804, 7533, 7812, 8343, 8652, 9579, 10044, 11124, 11718, 12772, 12978, 15066, 16686, 17577, 19158, 19467, 22351, 23436, 25029, 25956, 28737, 30132, 33372, 35154, 38316, 38934, 44702, 50058, 52731, 57474, 58401, 67053, 70308, 77868, 86211, 89404, 100116, 105462, 114948, 116802, 134106, 172422, 175203, 201159, 210924, 233604, 258633, 268212, 344844, 350406, 402318, 517266, 603477, 700812, 775899, 804636, 1034532, 1206954, 1551798, 1810431, 2413908, 3103596, 3620862, 5431293, 7241724, 10862586, 21725172]

約数ペア:

[(1, 21725172), (2, 10862586), (3, 7241724), (4, 5431293), (6, 3620862), (7, 3103596), (9, 2413908), (12, 1810431), (14, 1551798), (18, 1206954), (21, 1034532), (27, 804636), (28, 775899), (31, 700812), (36, 603477), (42, 517266), (54, 402318), (62, 350406), (63, 344844), (81, 268212), (84, 258633), (93, 233604), (103, 210924), (108, 201159), (124, 175203), (126, 172422), (162, 134106), (186, 116802), (189, 114948), (206, 105462), (217, 100116), (243, 89404), (252, 86211), (279, 77868), (309, 70308), (324, 67053), (372, 58401), (378, 57474), (412, 52731), (434, 50058), (486, 44702), (558, 38934), (567, 38316), (618, 35154), (651, 33372), (721, 30132), (756, 28737), (837, 25956), (868, 25029), (927, 23436), (972, 22351), (1116, 19467), (1134, 19158), (1236, 17577), (1302, 16686), (1442, 15066), (1674, 12978), (1701, 12772), (1854, 11718), (1953, 11124), (2163, 10044), (2268, 9579), (2511, 8652), (2604, 8343), (2781, 7812), (2884, 7533), (3193, 6804), (3348, 6489), (3402, 6386), (3708, 5859), (3906, 5562), (4326, 5022)]