20986005

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{1031}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 35665920

約数和(自身を除く): 14679915

約数列:

[1, 3, 5, 15, 23, 59, 69, 115, 177, 295, 345, 885, 1031, 1357, 3093, 4071, 5155, 6785, 15465, 20355, 23713, 60829, 71139, 118565, 182487, 304145, 355695, 912435, 1399067, 4197201, 6995335, 20986005]

約数ペア:

[(1, 20986005), (3, 6995335), (5, 4197201), (15, 1399067), (23, 912435), (59, 355695), (69, 304145), (115, 182487), (177, 118565), (295, 71139), (345, 60829), (885, 23713), (1031, 20355), (1357, 15465), (3093, 6785), (4071, 5155)]