21991284

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1531}}^1$

素因数の和:1570

約数の個数: 96

約数和(自身を含む): 68633600

約数和(自身を除く): 46642316

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 27, 28, 36, 38, 42, 54, 57, 63, 76, 84, 108, 114, 126, 133, 171, 189, 228, 252, 266, 342, 378, 399, 513, 532, 684, 756, 798, 1026, 1197, 1531, 1596, 2052, 2394, 3062, 3591, 4593, 4788, 6124, 7182, 9186, 10717, 13779, 14364, 18372, 21434, 27558, 29089, 32151, 41337, 42868, 55116, 58178, 64302, 82674, 87267, 96453, 116356, 128604, 165348, 174534, 192906, 203623, 261801, 289359, 349068, 385812, 407246, 523602, 578718, 610869, 785403, 814492, 1047204, 1157436, 1221738, 1570806, 1832607, 2443476, 3141612, 3665214, 5497821, 7330428, 10995642, 21991284]

約数ペア:

[(1, 21991284), (2, 10995642), (3, 7330428), (4, 5497821), (6, 3665214), (7, 3141612), (9, 2443476), (12, 1832607), (14, 1570806), (18, 1221738), (19, 1157436), (21, 1047204), (27, 814492), (28, 785403), (36, 610869), (38, 578718), (42, 523602), (54, 407246), (57, 385812), (63, 349068), (76, 289359), (84, 261801), (108, 203623), (114, 192906), (126, 174534), (133, 165348), (171, 128604), (189, 116356), (228, 96453), (252, 87267), (266, 82674), (342, 64302), (378, 58178), (399, 55116), (513, 42868), (532, 41337), (684, 32151), (756, 29089), (798, 27558), (1026, 21434), (1197, 18372), (1531, 14364), (1596, 13779), (2052, 10717), (2394, 9186), (3062, 7182), (3591, 6124), (4593, 4788)]