19878430

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{13901}}^1$

素因数の和:13932

約数の個数: 32

約数和(自身を含む): 42039648

約数和(自身を除く): 22161218

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 13901, 27802, 69505, 139010, 152911, 180713, 305822, 361426, 764555, 903565, 1529110, 1807130, 1987843, 3975686, 9939215, 19878430]

約数ペア:

[(1, 19878430), (2, 9939215), (5, 3975686), (10, 1987843), (11, 1807130), (13, 1529110), (22, 903565), (26, 764555), (55, 361426), (65, 305822), (110, 180713), (130, 152911), (143, 139010), (286, 69505), (715, 27802), (1430, 13901)]