20932185

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 17387943

約数列:

[1, 3, 5, 15, 17, 23, 43, 51, 69, 83, 85, 115, 129, 215, 249, 255, 345, 391, 415, 645, 731, 989, 1173, 1245, 1411, 1909, 1955, 2193, 2967, 3569, 3655, 4233, 4945, 5727, 5865, 7055, 9545, 10707, 10965, 14835, 16813, 17845, 21165, 28635, 32453, 50439, 53535, 60673, 82087, 84065, 97359, 162265, 182019, 246261, 252195, 303365, 410435, 486795, 910095, 1231305, 1395479, 4186437, 6977395, 20932185]

約数ペア:

[(1, 20932185), (3, 6977395), (5, 4186437), (15, 1395479), (17, 1231305), (23, 910095), (43, 486795), (51, 410435), (69, 303365), (83, 252195), (85, 246261), (115, 182019), (129, 162265), (215, 97359), (249, 84065), (255, 82087), (345, 60673), (391, 53535), (415, 50439), (645, 32453), (731, 28635), (989, 21165), (1173, 17845), (1245, 16813), (1411, 14835), (1909, 10965), (1955, 10707), (2193, 9545), (2967, 7055), (3569, 5865), (3655, 5727), (4233, 4945)]