20041580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4057}}^1$

素因数の和:4098

約数の個数: 48

約数和(自身を含む): 47722080

約数和(自身を除く): 27680500

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4057, 4940, 8114, 16228, 20285, 40570, 52741, 77083, 81140, 105482, 154166, 210964, 263705, 308332, 385415, 527410, 770830, 1002079, 1054820, 1541660, 2004158, 4008316, 5010395, 10020790, 20041580]

約数ペア:

[(1, 20041580), (2, 10020790), (4, 5010395), (5, 4008316), (10, 2004158), (13, 1541660), (19, 1054820), (20, 1002079), (26, 770830), (38, 527410), (52, 385415), (65, 308332), (76, 263705), (95, 210964), (130, 154166), (190, 105482), (247, 81140), (260, 77083), (380, 52741), (494, 40570), (988, 20285), (1235, 16228), (2470, 8114), (4057, 4940)]