15721888

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5399}}^1$

素因数の和:5429

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 22380512

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 5399, 10798, 21596, 37793, 43192, 70187, 75586, 86384, 140374, 151172, 172768, 280748, 302344, 491309, 561496, 604688, 982618, 1122992, 1209376, 1965236, 2245984, 3930472, 7860944, 15721888]

約数ペア:

[(1, 15721888), (2, 7860944), (4, 3930472), (7, 2245984), (8, 1965236), (13, 1209376), (14, 1122992), (16, 982618), (26, 604688), (28, 561496), (32, 491309), (52, 302344), (56, 280748), (91, 172768), (104, 151172), (112, 140374), (182, 86384), (208, 75586), (224, 70187), (364, 43192), (416, 37793), (728, 21596), (1456, 10798), (2912, 5399)]