18749198

素因数分解:

$2^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{251}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 32387040

約数和(自身を除く): 13637842

約数列:

[1, 2, 13, 17, 26, 34, 169, 221, 251, 338, 442, 502, 2197, 2873, 3263, 4267, 4394, 5746, 6526, 8534, 37349, 42419, 55471, 74698, 84838, 110942, 551447, 721123, 1102894, 1442246, 9374599, 18749198]

約数ペア:

[(1, 18749198), (2, 9374599), (13, 1442246), (17, 1102894), (26, 721123), (34, 551447), (169, 110942), (221, 84838), (251, 74698), (338, 55471), (442, 42419), (502, 37349), (2197, 8534), (2873, 6526), (3263, 5746), (4267, 4394)]