20558650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{389}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 44104320

約数和(自身を除く): 23545670

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 151, 175, 302, 350, 389, 755, 778, 1057, 1510, 1945, 2114, 2723, 3775, 3890, 5285, 5446, 7550, 9725, 10570, 13615, 19450, 26425, 27230, 52850, 58739, 68075, 117478, 136150, 293695, 411173, 587390, 822346, 1468475, 2055865, 2936950, 4111730, 10279325, 20558650]

約数ペア:

[(1, 20558650), (2, 10279325), (5, 4111730), (7, 2936950), (10, 2055865), (14, 1468475), (25, 822346), (35, 587390), (50, 411173), (70, 293695), (151, 136150), (175, 117478), (302, 68075), (350, 58739), (389, 52850), (755, 27230), (778, 26425), (1057, 19450), (1510, 13615), (1945, 10570), (2114, 9725), (2723, 7550), (3775, 5446), (3890, 5285)]