20415087

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 37290240

約数和(自身を除く): 16875153

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 89, 99, 231, 267, 331, 623, 693, 801, 979, 993, 1869, 2317, 2937, 2979, 3641, 5607, 6853, 6951, 8811, 10923, 20559, 20853, 25487, 29459, 32769, 61677, 76461, 88377, 206213, 229383, 265131, 324049, 618639, 972147, 1855917, 2268343, 2916441, 6805029, 20415087]

約数ペア:

[(1, 20415087), (3, 6805029), (7, 2916441), (9, 2268343), (11, 1855917), (21, 972147), (33, 618639), (63, 324049), (77, 265131), (89, 229383), (99, 206213), (231, 88377), (267, 76461), (331, 61677), (623, 32769), (693, 29459), (801, 25487), (979, 20853), (993, 20559), (1869, 10923), (2317, 8811), (2937, 6951), (2979, 6853), (3641, 5607)]