21000688290

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2102171}}^1$

素因数の和:2102224

約数の個数: 64

約数和(自身を含む): 57515425920

約数和(自身を除く): 36514737630

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 54, 74, 90, 111, 135, 185, 222, 270, 333, 370, 555, 666, 999, 1110, 1665, 1998, 3330, 4995, 9990, 2102171, 4204342, 6306513, 10510855, 12613026, 18919539, 21021710, 31532565, 37839078, 56758617, 63065130, 77780327, 94597695, 113517234, 155560654, 189195390, 233340981, 283793085, 388901635, 466681962, 567586170, 700022943, 777803270, 1166704905, 1400045886, 2100068829, 2333409810, 3500114715, 4200137658, 7000229430, 10500344145, 21000688290]

約数ペア:

[(1, 21000688290), (2, 10500344145), (3, 7000229430), (5, 4200137658), (6, 3500114715), (9, 2333409810), (10, 2100068829), (15, 1400045886), (18, 1166704905), (27, 777803270), (30, 700022943), (37, 567586170), (45, 466681962), (54, 388901635), (74, 283793085), (90, 233340981), (111, 189195390), (135, 155560654), (185, 113517234), (222, 94597695), (270, 77780327), (333, 63065130), (370, 56758617), (555, 37839078), (666, 31532565), (999, 21021710), (1110, 18919539), (1665, 12613026), (1998, 10510855), (3330, 6306513), (4995, 4204342), (9990, 2102171)]