20792475

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:329

約数の個数: 72

約数和(自身を含む): 42092544

約数和(自身を除く): 21300069

約数列:

[1, 3, 5, 9, 11, 15, 25, 31, 33, 45, 55, 75, 93, 99, 155, 165, 225, 271, 275, 279, 341, 465, 495, 775, 813, 825, 1023, 1355, 1395, 1705, 2325, 2439, 2475, 2981, 3069, 4065, 5115, 6775, 6975, 8401, 8525, 8943, 12195, 14905, 15345, 20325, 25203, 25575, 26829, 42005, 44715, 60975, 74525, 75609, 76725, 92411, 126015, 134145, 210025, 223575, 277233, 378045, 462055, 630075, 670725, 831699, 1386165, 1890225, 2310275, 4158495, 6930825, 20792475]

約数ペア:

[(1, 20792475), (3, 6930825), (5, 4158495), (9, 2310275), (11, 1890225), (15, 1386165), (25, 831699), (31, 670725), (33, 630075), (45, 462055), (55, 378045), (75, 277233), (93, 223575), (99, 210025), (155, 134145), (165, 126015), (225, 92411), (271, 76725), (275, 75609), (279, 74525), (341, 60975), (465, 44715), (495, 42005), (775, 26829), (813, 25575), (825, 25203), (1023, 20325), (1355, 15345), (1395, 14905), (1705, 12195), (2325, 8943), (2439, 8525), (2475, 8401), (2981, 6975), (3069, 6775), (4065, 5115)]