20966712

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:165

約数の個数: 128

約数和(自身を含む): 61689600

約数和(自身を除く): 40722888

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 17, 24, 26, 34, 39, 51, 52, 59, 67, 68, 78, 102, 104, 118, 134, 136, 156, 177, 201, 204, 221, 236, 268, 312, 354, 402, 408, 442, 472, 536, 663, 708, 767, 804, 871, 884, 1003, 1139, 1326, 1416, 1534, 1608, 1742, 1768, 2006, 2278, 2301, 2613, 2652, 3009, 3068, 3417, 3484, 3953, 4012, 4556, 4602, 5226, 5304, 6018, 6136, 6834, 6968, 7906, 8024, 9112, 9204, 10452, 11859, 12036, 13039, 13668, 14807, 15812, 18408, 20904, 23718, 24072, 26078, 27336, 29614, 31624, 39117, 44421, 47436, 51389, 52156, 59228, 67201, 78234, 88842, 94872, 102778, 104312, 118456, 134402, 154167, 156468, 177684, 201603, 205556, 268804, 308334, 312936, 355368, 403206, 411112, 537608, 616668, 806412, 873613, 1233336, 1612824, 1747226, 2620839, 3494452, 5241678, 6988904, 10483356, 20966712]

約数ペア:

[(1, 20966712), (2, 10483356), (3, 6988904), (4, 5241678), (6, 3494452), (8, 2620839), (12, 1747226), (13, 1612824), (17, 1233336), (24, 873613), (26, 806412), (34, 616668), (39, 537608), (51, 411112), (52, 403206), (59, 355368), (67, 312936), (68, 308334), (78, 268804), (102, 205556), (104, 201603), (118, 177684), (134, 156468), (136, 154167), (156, 134402), (177, 118456), (201, 104312), (204, 102778), (221, 94872), (236, 88842), (268, 78234), (312, 67201), (354, 59228), (402, 52156), (408, 51389), (442, 47436), (472, 44421), (536, 39117), (663, 31624), (708, 29614), (767, 27336), (804, 26078), (871, 24072), (884, 23718), (1003, 20904), (1139, 18408), (1326, 15812), (1416, 14807), (1534, 13668), (1608, 13039), (1742, 12036), (1768, 11859), (2006, 10452), (2278, 9204), (2301, 9112), (2613, 8024), (2652, 7906), (3009, 6968), (3068, 6834), (3417, 6136), (3484, 6018), (3953, 5304), (4012, 5226), (4556, 4602)]