64448740

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 138297600

約数和(自身を除く): 73848860

約数列:

[1, 2, 4, 5, 10, 20, 97, 139, 194, 239, 278, 388, 478, 485, 556, 695, 956, 970, 1195, 1390, 1940, 2390, 2780, 4780, 13483, 23183, 26966, 33221, 46366, 53932, 66442, 67415, 92732, 115915, 132884, 134830, 166105, 231830, 269660, 332210, 463660, 664420, 3222437, 6444874, 12889748, 16112185, 32224370, 64448740]

約数ペア:

[(1, 64448740), (2, 32224370), (4, 16112185), (5, 12889748), (10, 6444874), (20, 3222437), (97, 664420), (139, 463660), (194, 332210), (239, 269660), (278, 231830), (388, 166105), (478, 134830), (485, 132884), (556, 115915), (695, 92732), (956, 67415), (970, 66442), (1195, 53932), (1390, 46366), (1940, 33221), (2390, 26966), (2780, 23183), (4780, 13483)]