19918356

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{389}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 49533120

約数和(自身を除く): 29614764

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 251, 389, 502, 753, 778, 1004, 1167, 1506, 1556, 2334, 3012, 4267, 4668, 6613, 8534, 12801, 13226, 17068, 19839, 25602, 26452, 39678, 51204, 79356, 97639, 195278, 292917, 390556, 585834, 1171668, 1659863, 3319726, 4979589, 6639452, 9959178, 19918356]

約数ペア:

[(1, 19918356), (2, 9959178), (3, 6639452), (4, 4979589), (6, 3319726), (12, 1659863), (17, 1171668), (34, 585834), (51, 390556), (68, 292917), (102, 195278), (204, 97639), (251, 79356), (389, 51204), (502, 39678), (753, 26452), (778, 25602), (1004, 19839), (1167, 17068), (1506, 13226), (1556, 12801), (2334, 8534), (3012, 6613), (4267, 4668)]