1640322008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{65993}}^1$

素因数の和:66251

約数の個数: 32

約数和(自身を含む): 3326097600

約数和(自身を除く): 1685775592

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 239, 478, 956, 1912, 3107, 6214, 12428, 24856, 65993, 131986, 263972, 527944, 857909, 1715818, 3431636, 6863272, 15772327, 31544654, 63089308, 126178616, 205040251, 410080502, 820161004, 1640322008]

約数ペア:

[(1, 1640322008), (2, 820161004), (4, 410080502), (8, 205040251), (13, 126178616), (26, 63089308), (52, 31544654), (104, 15772327), (239, 6863272), (478, 3431636), (956, 1715818), (1912, 857909), (3107, 527944), (6214, 263972), (12428, 131986), (24856, 65993)]