21303958

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:496

約数の個数: 32

約数和(自身を含む): 36789984

約数和(自身を除く): 15486026

約数列:

[1, 2, 13, 17, 26, 34, 157, 221, 307, 314, 442, 614, 2041, 2669, 3991, 4082, 5219, 5338, 7982, 10438, 34697, 48199, 67847, 69394, 96398, 135694, 626587, 819383, 1253174, 1638766, 10651979, 21303958]

約数ペア:

[(1, 21303958), (2, 10651979), (13, 1638766), (17, 1253174), (26, 819383), (34, 626587), (157, 135694), (221, 96398), (307, 69394), (314, 67847), (442, 48199), (614, 34697), (2041, 10438), (2669, 7982), (3991, 5338), (4082, 5219)]