21406736

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1061}}^1$

素因数の和:1179

約数の個数: 40

約数和(自身を含む): 45168984

約数和(自身を除く): 23762248

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 97, 104, 194, 208, 388, 776, 1061, 1261, 1552, 2122, 2522, 4244, 5044, 8488, 10088, 13793, 16976, 20176, 27586, 55172, 102917, 110344, 205834, 220688, 411668, 823336, 1337921, 1646672, 2675842, 5351684, 10703368, 21406736]

約数ペア:

[(1, 21406736), (2, 10703368), (4, 5351684), (8, 2675842), (13, 1646672), (16, 1337921), (26, 823336), (52, 411668), (97, 220688), (104, 205834), (194, 110344), (208, 102917), (388, 55172), (776, 27586), (1061, 20176), (1261, 16976), (1552, 13793), (2122, 10088), (2522, 8488), (4244, 5044)]