219960020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{224449}}^1$

素因数の和:224472

約数の個数: 36

約数和(自身を含む): 537333300

約数和(自身を除く): 317373280

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 224449, 448898, 897796, 1122245, 1571143, 2244490, 3142286, 4488980, 6284572, 7855715, 10998001, 15711430, 21996002, 31422860, 43992004, 54990005, 109980010, 219960020]

約数ペア:

[(1, 219960020), (2, 109980010), (4, 54990005), (5, 43992004), (7, 31422860), (10, 21996002), (14, 15711430), (20, 10998001), (28, 7855715), (35, 6284572), (49, 4488980), (70, 3142286), (98, 2244490), (140, 1571143), (196, 1122245), (245, 897796), (490, 448898), (980, 224449)]