21997668

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 68947200

約数和(自身を除く): 46949532

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 19, 21, 22, 28, 33, 38, 42, 44, 49, 57, 66, 76, 77, 84, 98, 114, 132, 133, 147, 154, 179, 196, 209, 228, 231, 266, 294, 308, 358, 399, 418, 462, 532, 537, 539, 588, 627, 716, 798, 836, 924, 931, 1074, 1078, 1253, 1254, 1463, 1596, 1617, 1862, 1969, 2148, 2156, 2506, 2508, 2793, 2926, 3234, 3401, 3724, 3759, 3938, 4389, 5012, 5586, 5852, 5907, 6468, 6802, 7518, 7876, 8771, 8778, 10203, 10241, 11172, 11814, 13604, 13783, 15036, 17542, 17556, 20406, 20482, 23628, 23807, 26313, 27566, 30723, 35084, 37411, 40812, 40964, 41349, 47614, 52626, 55132, 61446, 71421, 74822, 82698, 95228, 96481, 105252, 112233, 122892, 142842, 149644, 165396, 166649, 192962, 224466, 261877, 285684, 289443, 333298, 385924, 448932, 499947, 523754, 578886, 666596, 785631, 999894, 1047508, 1157772, 1571262, 1833139, 1999788, 3142524, 3666278, 5499417, 7332556, 10998834, 21997668]

約数ペア:

[(1, 21997668), (2, 10998834), (3, 7332556), (4, 5499417), (6, 3666278), (7, 3142524), (11, 1999788), (12, 1833139), (14, 1571262), (19, 1157772), (21, 1047508), (22, 999894), (28, 785631), (33, 666596), (38, 578886), (42, 523754), (44, 499947), (49, 448932), (57, 385924), (66, 333298), (76, 289443), (77, 285684), (84, 261877), (98, 224466), (114, 192962), (132, 166649), (133, 165396), (147, 149644), (154, 142842), (179, 122892), (196, 112233), (209, 105252), (228, 96481), (231, 95228), (266, 82698), (294, 74822), (308, 71421), (358, 61446), (399, 55132), (418, 52626), (462, 47614), (532, 41349), (537, 40964), (539, 40812), (588, 37411), (627, 35084), (716, 30723), (798, 27566), (836, 26313), (924, 23807), (931, 23628), (1074, 20482), (1078, 20406), (1253, 17556), (1254, 17542), (1463, 15036), (1596, 13783), (1617, 13604), (1862, 11814), (1969, 11172), (2148, 10241), (2156, 10203), (2506, 8778), (2508, 8771), (2793, 7876), (2926, 7518), (3234, 6802), (3401, 6468), (3724, 5907), (3759, 5852), (3938, 5586), (4389, 5012)]