2017820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 5171040

約数和(自身を除く): 3153220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 71, 98, 116, 140, 142, 145, 196, 203, 245, 284, 290, 355, 406, 490, 497, 580, 710, 812, 980, 994, 1015, 1420, 1421, 1988, 2030, 2059, 2485, 2842, 3479, 4060, 4118, 4970, 5684, 6958, 7105, 8236, 9940, 10295, 13916, 14210, 14413, 17395, 20590, 28420, 28826, 34790, 41180, 57652, 69580, 72065, 100891, 144130, 201782, 288260, 403564, 504455, 1008910, 2017820]

約数ペア:

[(1, 2017820), (2, 1008910), (4, 504455), (5, 403564), (7, 288260), (10, 201782), (14, 144130), (20, 100891), (28, 72065), (29, 69580), (35, 57652), (49, 41180), (58, 34790), (70, 28826), (71, 28420), (98, 20590), (116, 17395), (140, 14413), (142, 14210), (145, 13916), (196, 10295), (203, 9940), (245, 8236), (284, 7105), (290, 6958), (355, 5684), (406, 4970), (490, 4118), (497, 4060), (580, 3479), (710, 2842), (812, 2485), (980, 2059), (994, 2030), (1015, 1988), (1420, 1421)]