28131940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{853}}^1$

素因数の和:976

約数の個数: 48

約数和(自身を含む): 63271152

約数和(自身を除く): 35139212

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 97, 170, 194, 340, 388, 485, 853, 970, 1649, 1706, 1940, 3298, 3412, 4265, 6596, 8245, 8530, 14501, 16490, 17060, 29002, 32980, 58004, 72505, 82741, 145010, 165482, 290020, 330964, 413705, 827410, 1406597, 1654820, 2813194, 5626388, 7032985, 14065970, 28131940]

約数ペア:

[(1, 28131940), (2, 14065970), (4, 7032985), (5, 5626388), (10, 2813194), (17, 1654820), (20, 1406597), (34, 827410), (68, 413705), (85, 330964), (97, 290020), (170, 165482), (194, 145010), (340, 82741), (388, 72505), (485, 58004), (853, 32980), (970, 29002), (1649, 17060), (1706, 16490), (1940, 14501), (3298, 8530), (3412, 8245), (4265, 6596)]