2021356519

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 2655313920

約数和(自身を除く): 633957401

約数列:

[1, 7, 13, 31, 83, 89, 91, 97, 217, 403, 581, 623, 679, 1079, 1157, 1261, 2573, 2759, 2821, 3007, 7387, 7553, 8051, 8099, 8633, 8827, 18011, 19313, 21049, 33449, 35867, 39091, 51709, 56357, 60431, 96031, 104663, 112229, 228997, 234143, 249581, 251069, 267623, 273637, 672217, 716539, 732641, 785603, 1602979, 1747067, 1873361, 2976961, 3244553, 3479099, 5015773, 9315007, 20838727, 22212709, 22711871, 24353693, 65205049, 155488963, 288765217, 2021356519]

約数ペア:

[(1, 2021356519), (7, 288765217), (13, 155488963), (31, 65205049), (83, 24353693), (89, 22711871), (91, 22212709), (97, 20838727), (217, 9315007), (403, 5015773), (581, 3479099), (623, 3244553), (679, 2976961), (1079, 1873361), (1157, 1747067), (1261, 1602979), (2573, 785603), (2759, 732641), (2821, 716539), (3007, 672217), (7387, 273637), (7553, 267623), (8051, 251069), (8099, 249581), (8633, 234143), (8827, 228997), (18011, 112229), (19313, 104663), (21049, 96031), (33449, 60431), (35867, 56357), (39091, 51709)]