20180996

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 40080768

約数和(自身を除く): 19899772

約数列:

[1, 2, 4, 11, 22, 44, 61, 73, 103, 122, 146, 206, 244, 292, 412, 671, 803, 1133, 1342, 1606, 2266, 2684, 3212, 4453, 4532, 6283, 7519, 8906, 12566, 15038, 17812, 25132, 30076, 48983, 69113, 82709, 97966, 138226, 165418, 195932, 276452, 330836, 458659, 917318, 1834636, 5045249, 10090498, 20180996]

約数ペア:

[(1, 20180996), (2, 10090498), (4, 5045249), (11, 1834636), (22, 917318), (44, 458659), (61, 330836), (73, 276452), (103, 195932), (122, 165418), (146, 138226), (206, 97966), (244, 82709), (292, 69113), (412, 48983), (671, 30076), (803, 25132), (1133, 17812), (1342, 15038), (1606, 12566), (2266, 8906), (2684, 7519), (3212, 6283), (4453, 4532)]