81945160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{186239}}^1$

素因数の和:186261

約数の個数: 32

約数和(自身を含む): 201139200

約数和(自身を除く): 119194040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 186239, 372478, 744956, 931195, 1489912, 1862390, 2048629, 3724780, 4097258, 7449560, 8194516, 10243145, 16389032, 20486290, 40972580, 81945160]

約数ペア:

[(1, 81945160), (2, 40972580), (4, 20486290), (5, 16389032), (8, 10243145), (10, 8194516), (11, 7449560), (20, 4097258), (22, 3724780), (40, 2048629), (44, 1862390), (55, 1489912), (88, 931195), (110, 744956), (220, 372478), (440, 186239)]