21211184

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:357

約数の個数: 40

約数和(自身を含む): 42288960

約数和(自身を除く): 21077776

約数列:

[1, 2, 4, 8, 16, 79, 97, 158, 173, 194, 316, 346, 388, 632, 692, 776, 1264, 1384, 1552, 2768, 7663, 13667, 15326, 16781, 27334, 30652, 33562, 54668, 61304, 67124, 109336, 122608, 134248, 218672, 268496, 1325699, 2651398, 5302796, 10605592, 21211184]

約数ペア:

[(1, 21211184), (2, 10605592), (4, 5302796), (8, 2651398), (16, 1325699), (79, 268496), (97, 218672), (158, 134248), (173, 122608), (194, 109336), (316, 67124), (346, 61304), (388, 54668), (632, 33562), (692, 30652), (776, 27334), (1264, 16781), (1384, 15326), (1552, 13667), (2768, 7663)]