68556680

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{28097}}^1$

素因数の和:28169

約数の個数: 32

約数和(自身を含む): 156786840

約数和(自身を除く): 88230160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 28097, 56194, 112388, 140485, 224776, 280970, 561940, 1123880, 1713917, 3427834, 6855668, 8569585, 13711336, 17139170, 34278340, 68556680]

約数ペア:

[(1, 68556680), (2, 34278340), (4, 17139170), (5, 13711336), (8, 8569585), (10, 6855668), (20, 3427834), (40, 1713917), (61, 1123880), (122, 561940), (244, 280970), (305, 224776), (488, 140485), (610, 112388), (1220, 56194), (2440, 28097)]