16665688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:188

約数の個数: 64

約数和(自身を含む): 35622720

約数和(自身を除く): 18957032

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 61, 71, 74, 104, 122, 142, 148, 244, 284, 296, 481, 488, 568, 793, 923, 962, 1586, 1846, 1924, 2257, 2627, 3172, 3692, 3848, 4331, 4514, 5254, 6344, 7384, 8662, 9028, 10508, 17324, 18056, 21016, 29341, 34151, 34648, 56303, 58682, 68302, 112606, 117364, 136604, 160247, 225212, 234728, 273208, 320494, 450424, 640988, 1281976, 2083211, 4166422, 8332844, 16665688]

約数ペア:

[(1, 16665688), (2, 8332844), (4, 4166422), (8, 2083211), (13, 1281976), (26, 640988), (37, 450424), (52, 320494), (61, 273208), (71, 234728), (74, 225212), (104, 160247), (122, 136604), (142, 117364), (148, 112606), (244, 68302), (284, 58682), (296, 56303), (481, 34648), (488, 34151), (568, 29341), (793, 21016), (923, 18056), (962, 17324), (1586, 10508), (1846, 9028), (1924, 8662), (2257, 7384), (2627, 6344), (3172, 5254), (3692, 4514), (3848, 4331)]