19937964

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 32316756

約数列:

[1, 2, 3, 4, 6, 12, 23, 29, 46, 47, 53, 58, 69, 87, 92, 94, 106, 116, 138, 141, 159, 174, 188, 212, 276, 282, 318, 348, 564, 636, 667, 1081, 1219, 1334, 1363, 1537, 2001, 2162, 2438, 2491, 2668, 2726, 3074, 3243, 3657, 4002, 4089, 4324, 4611, 4876, 4982, 5452, 6148, 6486, 7314, 7473, 8004, 8178, 9222, 9964, 12972, 14628, 14946, 16356, 18444, 29892, 31349, 35351, 57293, 62698, 70702, 72239, 94047, 106053, 114586, 125396, 141404, 144478, 171879, 188094, 212106, 216717, 229172, 288956, 343758, 376188, 424212, 433434, 687516, 866868, 1661497, 3322994, 4984491, 6645988, 9968982, 19937964]

約数ペア:

[(1, 19937964), (2, 9968982), (3, 6645988), (4, 4984491), (6, 3322994), (12, 1661497), (23, 866868), (29, 687516), (46, 433434), (47, 424212), (53, 376188), (58, 343758), (69, 288956), (87, 229172), (92, 216717), (94, 212106), (106, 188094), (116, 171879), (138, 144478), (141, 141404), (159, 125396), (174, 114586), (188, 106053), (212, 94047), (276, 72239), (282, 70702), (318, 62698), (348, 57293), (564, 35351), (636, 31349), (667, 29892), (1081, 18444), (1219, 16356), (1334, 14946), (1363, 14628), (1537, 12972), (2001, 9964), (2162, 9222), (2438, 8178), (2491, 8004), (2668, 7473), (2726, 7314), (3074, 6486), (3243, 6148), (3657, 5452), (4002, 4982), (4089, 4876), (4324, 4611)]