21012138

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:232

約数の個数: 96

約数和(自身を含む): 56010240

約数和(自身を除く): 34998102

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 38, 42, 57, 63, 67, 114, 126, 131, 133, 134, 171, 201, 262, 266, 342, 393, 399, 402, 469, 603, 786, 798, 917, 938, 1179, 1197, 1206, 1273, 1407, 1834, 2358, 2394, 2489, 2546, 2751, 2814, 3819, 4221, 4978, 5502, 7467, 7638, 8253, 8442, 8777, 8911, 11457, 14934, 16506, 17423, 17554, 17822, 22401, 22914, 26331, 26733, 34846, 44802, 52269, 52662, 53466, 61439, 78993, 80199, 104538, 122878, 156807, 157986, 160398, 166763, 184317, 313614, 333526, 368634, 500289, 552951, 1000578, 1105902, 1167341, 1500867, 2334682, 3001734, 3502023, 7004046, 10506069, 21012138]

約数ペア:

[(1, 21012138), (2, 10506069), (3, 7004046), (6, 3502023), (7, 3001734), (9, 2334682), (14, 1500867), (18, 1167341), (19, 1105902), (21, 1000578), (38, 552951), (42, 500289), (57, 368634), (63, 333526), (67, 313614), (114, 184317), (126, 166763), (131, 160398), (133, 157986), (134, 156807), (171, 122878), (201, 104538), (262, 80199), (266, 78993), (342, 61439), (393, 53466), (399, 52662), (402, 52269), (469, 44802), (603, 34846), (786, 26733), (798, 26331), (917, 22914), (938, 22401), (1179, 17822), (1197, 17554), (1206, 17423), (1273, 16506), (1407, 14934), (1834, 11457), (2358, 8911), (2394, 8777), (2489, 8442), (2546, 8253), (2751, 7638), (2814, 7467), (3819, 5502), (4221, 4978)]