217813428

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:627

約数の個数: 144

約数和(自身を含む): 666489600

約数和(自身を除く): 448676172

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 54, 63, 79, 84, 98, 108, 126, 147, 158, 189, 196, 237, 252, 294, 316, 378, 441, 474, 521, 553, 588, 711, 756, 882, 948, 1042, 1106, 1323, 1422, 1563, 1659, 1764, 2084, 2133, 2212, 2646, 2844, 3126, 3318, 3647, 3871, 4266, 4689, 4977, 5292, 6252, 6636, 7294, 7742, 8532, 9378, 9954, 10941, 11613, 14067, 14588, 14931, 15484, 18756, 19908, 21882, 23226, 25529, 28134, 29862, 32823, 34839, 41159, 43764, 46452, 51058, 56268, 59724, 65646, 69678, 76587, 82318, 98469, 102116, 104517, 123477, 131292, 139356, 153174, 164636, 196938, 209034, 229761, 246954, 288113, 306348, 370431, 393876, 418068, 459522, 493908, 576226, 689283, 740862, 864339, 919044, 1111293, 1152452, 1378566, 1481724, 1728678, 2016791, 2222586, 2593017, 2757132, 3457356, 4033582, 4445172, 5186034, 6050373, 7779051, 8067164, 10372068, 12100746, 15558102, 18151119, 24201492, 31116204, 36302238, 54453357, 72604476, 108906714, 217813428]

約数ペア:

[(1, 217813428), (2, 108906714), (3, 72604476), (4, 54453357), (6, 36302238), (7, 31116204), (9, 24201492), (12, 18151119), (14, 15558102), (18, 12100746), (21, 10372068), (27, 8067164), (28, 7779051), (36, 6050373), (42, 5186034), (49, 4445172), (54, 4033582), (63, 3457356), (79, 2757132), (84, 2593017), (98, 2222586), (108, 2016791), (126, 1728678), (147, 1481724), (158, 1378566), (189, 1152452), (196, 1111293), (237, 919044), (252, 864339), (294, 740862), (316, 689283), (378, 576226), (441, 493908), (474, 459522), (521, 418068), (553, 393876), (588, 370431), (711, 306348), (756, 288113), (882, 246954), (948, 229761), (1042, 209034), (1106, 196938), (1323, 164636), (1422, 153174), (1563, 139356), (1659, 131292), (1764, 123477), (2084, 104517), (2133, 102116), (2212, 98469), (2646, 82318), (2844, 76587), (3126, 69678), (3318, 65646), (3647, 59724), (3871, 56268), (4266, 51058), (4689, 46452), (4977, 43764), (5292, 41159), (6252, 34839), (6636, 32823), (7294, 29862), (7742, 28134), (8532, 25529), (9378, 23226), (9954, 21882), (10941, 19908), (11613, 18756), (14067, 15484), (14588, 14931)]