18954286

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 64

約数和(自身を含む): 35622720

約数和(自身を除く): 16668434

約数列:

[1, 2, 13, 17, 19, 26, 34, 37, 38, 61, 74, 122, 221, 247, 323, 442, 481, 494, 629, 646, 703, 793, 962, 1037, 1159, 1258, 1406, 1586, 2074, 2257, 2318, 4199, 4514, 8177, 8398, 9139, 11951, 13481, 15067, 16354, 18278, 19703, 23902, 26962, 29341, 30134, 38369, 39406, 42883, 58682, 76738, 85766, 155363, 256139, 310726, 498797, 512278, 557479, 729011, 997594, 1114958, 1458022, 9477143, 18954286]

約数ペア:

[(1, 18954286), (2, 9477143), (13, 1458022), (17, 1114958), (19, 997594), (26, 729011), (34, 557479), (37, 512278), (38, 498797), (61, 310726), (74, 256139), (122, 155363), (221, 85766), (247, 76738), (323, 58682), (442, 42883), (481, 39406), (494, 38369), (629, 30134), (646, 29341), (703, 26962), (793, 23902), (962, 19703), (1037, 18278), (1159, 16354), (1258, 15067), (1406, 13481), (1586, 11951), (2074, 9139), (2257, 8398), (2318, 8177), (4199, 4514)]