20184944

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1831}}^1$

素因数の和:1905

約数の個数: 40

約数和(自身を含む): 42934752

約数和(自身を除く): 22749808

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 424, 689, 848, 1378, 1831, 2756, 3662, 5512, 7324, 11024, 14648, 23803, 29296, 47606, 95212, 97043, 190424, 194086, 380848, 388172, 776344, 1261559, 1552688, 2523118, 5046236, 10092472, 20184944]

約数ペア:

[(1, 20184944), (2, 10092472), (4, 5046236), (8, 2523118), (13, 1552688), (16, 1261559), (26, 776344), (52, 388172), (53, 380848), (104, 194086), (106, 190424), (208, 97043), (212, 95212), (424, 47606), (689, 29296), (848, 23803), (1378, 14648), (1831, 11024), (2756, 7324), (3662, 5512)]