20996486

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{479}}^1$

素因数の和:620

約数の個数: 32

約数和(自身を含む): 37601280

約数和(自身を除く): 16604794

約数列:

[1, 2, 7, 14, 31, 62, 101, 202, 217, 434, 479, 707, 958, 1414, 3131, 3353, 6262, 6706, 14849, 21917, 29698, 43834, 48379, 96758, 103943, 207886, 338653, 677306, 1499749, 2999498, 10498243, 20996486]

約数ペア:

[(1, 20996486), (2, 10498243), (7, 2999498), (14, 1499749), (31, 677306), (62, 338653), (101, 207886), (202, 103943), (217, 96758), (434, 48379), (479, 43834), (707, 29698), (958, 21917), (1414, 14849), (3131, 6706), (3353, 6262)]