28921330975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1\times {\mathrm{1021}}^1$

素因数の和:1588

約数の個数: 48

約数和(自身を含む): 37638216000

約数和(自身を除く): 8716885025

約数列:

[1, 5, 25, 29, 89, 145, 439, 445, 725, 1021, 2195, 2225, 2581, 5105, 10975, 12731, 12905, 25525, 29609, 39071, 63655, 64525, 90869, 148045, 195355, 318275, 448219, 454345, 740225, 976775, 1133059, 2241095, 2271725, 2635201, 5665295, 11205475, 12998351, 13176005, 28326475, 39891491, 64991755, 65880025, 199457455, 324958775, 997287275, 1156853239, 5784266195, 28921330975]

約数ペア:

[(1, 28921330975), (5, 5784266195), (25, 1156853239), (29, 997287275), (89, 324958775), (145, 199457455), (439, 65880025), (445, 64991755), (725, 39891491), (1021, 28326475), (2195, 13176005), (2225, 12998351), (2581, 11205475), (5105, 5665295), (10975, 2635201), (12731, 2271725), (12905, 2241095), (25525, 1133059), (29609, 976775), (39071, 740225), (63655, 454345), (64525, 448219), (90869, 318275), (148045, 195355)]