20919160

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{3023}}^1$

素因数の和:3207

約数の個数: 32

約数和(自身を含む): 47355840

約数和(自身を除く): 26436680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3023, 3460, 6046, 6920, 12092, 15115, 24184, 30230, 60460, 120920, 522979, 1045958, 2091916, 2614895, 4183832, 5229790, 10459580, 20919160]

約数ペア:

[(1, 20919160), (2, 10459580), (4, 5229790), (5, 4183832), (8, 2614895), (10, 2091916), (20, 1045958), (40, 522979), (173, 120920), (346, 60460), (692, 30230), (865, 24184), (1384, 15115), (1730, 12092), (3023, 6920), (3460, 6046)]