31978323

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 52284960

約数和(自身を除く): 20306637

約数列:

[1, 3, 9, 13, 37, 39, 83, 89, 111, 117, 249, 267, 333, 481, 747, 801, 1079, 1157, 1443, 3071, 3237, 3293, 3471, 4329, 7387, 9213, 9711, 9879, 10413, 22161, 27639, 29637, 39923, 42809, 66483, 96031, 119769, 128427, 273319, 288093, 359307, 385281, 819957, 864279, 2459871, 3553147, 10659441, 31978323]

約数ペア:

[(1, 31978323), (3, 10659441), (9, 3553147), (13, 2459871), (37, 864279), (39, 819957), (83, 385281), (89, 359307), (111, 288093), (117, 273319), (249, 128427), (267, 119769), (333, 96031), (481, 66483), (747, 42809), (801, 39923), (1079, 29637), (1157, 27639), (1443, 22161), (3071, 10413), (3237, 9879), (3293, 9711), (3471, 9213), (4329, 7387)]