20580040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2083}}^1$

素因数の和:2126

約数の個数: 64

約数和(自身を含む): 52516800

約数和(自身を除く): 31936760

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2083, 2470, 4166, 4940, 8332, 9880, 10415, 16664, 20830, 27079, 39577, 41660, 54158, 79154, 83320, 108316, 135395, 158308, 197885, 216632, 270790, 316616, 395770, 514501, 541580, 791540, 1029002, 1083160, 1583080, 2058004, 2572505, 4116008, 5145010, 10290020, 20580040]

約数ペア:

[(1, 20580040), (2, 10290020), (4, 5145010), (5, 4116008), (8, 2572505), (10, 2058004), (13, 1583080), (19, 1083160), (20, 1029002), (26, 791540), (38, 541580), (40, 514501), (52, 395770), (65, 316616), (76, 270790), (95, 216632), (104, 197885), (130, 158308), (152, 135395), (190, 108316), (247, 83320), (260, 79154), (380, 54158), (494, 41660), (520, 39577), (760, 27079), (988, 20830), (1235, 16664), (1976, 10415), (2083, 9880), (2470, 8332), (4166, 4940)]