20851040

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18617}}^1$

素因数の和:18639

約数の個数: 48

約数和(自身を含む): 56300832

約数和(自身を除く): 35449792

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18617, 37234, 74468, 93085, 130319, 148936, 186170, 260638, 297872, 372340, 521276, 595744, 651595, 744680, 1042552, 1303190, 1489360, 2085104, 2606380, 2978720, 4170208, 5212760, 10425520, 20851040]

約数ペア:

[(1, 20851040), (2, 10425520), (4, 5212760), (5, 4170208), (7, 2978720), (8, 2606380), (10, 2085104), (14, 1489360), (16, 1303190), (20, 1042552), (28, 744680), (32, 651595), (35, 595744), (40, 521276), (56, 372340), (70, 297872), (80, 260638), (112, 186170), (140, 148936), (160, 130319), (224, 93085), (280, 74468), (560, 37234), (1120, 18617)]