31911640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{211}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 76320000

約数和(自身を除く): 44408360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 199, 211, 380, 398, 422, 760, 796, 844, 995, 1055, 1592, 1688, 1990, 2110, 3781, 3980, 4009, 4220, 7562, 7960, 8018, 8440, 15124, 16036, 18905, 20045, 30248, 32072, 37810, 40090, 41989, 75620, 80180, 83978, 151240, 160360, 167956, 209945, 335912, 419890, 797791, 839780, 1595582, 1679560, 3191164, 3988955, 6382328, 7977910, 15955820, 31911640]

約数ペア:

[(1, 31911640), (2, 15955820), (4, 7977910), (5, 6382328), (8, 3988955), (10, 3191164), (19, 1679560), (20, 1595582), (38, 839780), (40, 797791), (76, 419890), (95, 335912), (152, 209945), (190, 167956), (199, 160360), (211, 151240), (380, 83978), (398, 80180), (422, 75620), (760, 41989), (796, 40090), (844, 37810), (995, 32072), (1055, 30248), (1592, 20045), (1688, 18905), (1990, 16036), (2110, 15124), (3781, 8440), (3980, 8018), (4009, 7960), (4220, 7562)]