27774980

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 59928960

約数和(自身を除く): 32153980

約数列:

[1, 2, 4, 5, 10, 20, 97, 103, 139, 194, 206, 278, 388, 412, 485, 515, 556, 695, 970, 1030, 1390, 1940, 2060, 2780, 9991, 13483, 14317, 19982, 26966, 28634, 39964, 49955, 53932, 57268, 67415, 71585, 99910, 134830, 143170, 199820, 269660, 286340, 1388749, 2777498, 5554996, 6943745, 13887490, 27774980]

約数ペア:

[(1, 27774980), (2, 13887490), (4, 6943745), (5, 5554996), (10, 2777498), (20, 1388749), (97, 286340), (103, 269660), (139, 199820), (194, 143170), (206, 134830), (278, 99910), (388, 71585), (412, 67415), (485, 57268), (515, 53932), (556, 49955), (695, 39964), (970, 28634), (1030, 26966), (1390, 19982), (1940, 14317), (2060, 13483), (2780, 9991)]