20809475809915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{8059}}^1\times {\mathrm{17431}}^1$

素因数の和:25604

約数の個数: 64

約数和(自身を含む): 28041935201280

約数和(自身を除く): 7232459391365

約数列:

[1, 5, 13, 43, 53, 65, 215, 265, 559, 689, 2279, 2795, 3445, 8059, 11395, 17431, 29627, 40295, 87155, 104767, 148135, 226603, 346537, 427127, 523835, 749533, 923843, 1133015, 1732685, 2135635, 3747665, 4504981, 4619215, 5552651, 9743929, 12009959, 18366461, 22524905, 27763255, 39725249, 48719645, 60049795, 91832305, 140476429, 198626245, 238763993, 516428237, 702382145, 1193819965, 1826193577, 2582141185, 6040486447, 7445250737, 9130967885, 30202432235, 37226253685, 78526323811, 96788259581, 320145781691, 392631619055, 483941297905, 1600728908455, 4161895161983, 20809475809915]

約数ペア:

[(1, 20809475809915), (5, 4161895161983), (13, 1600728908455), (43, 483941297905), (53, 392631619055), (65, 320145781691), (215, 96788259581), (265, 78526323811), (559, 37226253685), (689, 30202432235), (2279, 9130967885), (2795, 7445250737), (3445, 6040486447), (8059, 2582141185), (11395, 1826193577), (17431, 1193819965), (29627, 702382145), (40295, 516428237), (87155, 238763993), (104767, 198626245), (148135, 140476429), (226603, 91832305), (346537, 60049795), (427127, 48719645), (523835, 39725249), (749533, 27763255), (923843, 22524905), (1133015, 18366461), (1732685, 12009959), (2135635, 9743929), (3747665, 5552651), (4504981, 4619215)]