21721552

素因数分解:

$2^4\times {\mathrm{503}}^1\times {\mathrm{2699}}^1$

素因数の和:3210

約数の個数: 20

約数和(自身を含む): 42184800

約数和(自身を除く): 20463248

約数列:

[1, 2, 4, 8, 16, 503, 1006, 2012, 2699, 4024, 5398, 8048, 10796, 21592, 43184, 1357597, 2715194, 5430388, 10860776, 21721552]

約数ペア:

[(1, 21721552), (2, 10860776), (4, 5430388), (8, 2715194), (16, 1357597), (503, 43184), (1006, 21592), (2012, 10796), (2699, 8048), (4024, 5398)]