21031859525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{743}}^1\times {\mathrm{2591}}^1$

素因数の和:3386

約数の個数: 48

約数和(自身を含む): 28695306240

約数和(自身を除く): 7663446715

約数列:

[1, 5, 19, 23, 25, 95, 115, 437, 475, 575, 743, 2185, 2591, 3715, 10925, 12955, 14117, 17089, 18575, 49229, 59593, 64775, 70585, 85445, 246145, 297965, 324691, 352925, 427225, 1132267, 1230725, 1489825, 1623455, 1925113, 5661335, 8117275, 9625565, 28306675, 36577147, 44277599, 48127825, 182885735, 221387995, 841274381, 914428675, 1106939975, 4206371905, 21031859525]

約数ペア:

[(1, 21031859525), (5, 4206371905), (19, 1106939975), (23, 914428675), (25, 841274381), (95, 221387995), (115, 182885735), (437, 48127825), (475, 44277599), (575, 36577147), (743, 28306675), (2185, 9625565), (2591, 8117275), (3715, 5661335), (10925, 1925113), (12955, 1623455), (14117, 1489825), (17089, 1230725), (18575, 1132267), (49229, 427225), (59593, 352925), (64775, 324691), (70585, 297965), (85445, 246145)]