20376280

素因数分解:

$2^3\times 5^1\times {\mathrm{659}}^1\times {\mathrm{773}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 45975600

約数和(自身を除く): 25599320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 659, 773, 1318, 1546, 2636, 3092, 3295, 3865, 5272, 6184, 6590, 7730, 13180, 15460, 26360, 30920, 509407, 1018814, 2037628, 2547035, 4075256, 5094070, 10188140, 20376280]

約数ペア:

[(1, 20376280), (2, 10188140), (4, 5094070), (5, 4075256), (8, 2547035), (10, 2037628), (20, 1018814), (40, 509407), (659, 30920), (773, 26360), (1318, 15460), (1546, 13180), (2636, 7730), (3092, 6590), (3295, 6184), (3865, 5272)]