28779387

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 47523840

約数和(自身を除く): 18744453

約数列:

[1, 3, 7, 13, 21, 39, 91, 271, 273, 389, 813, 1167, 1897, 2723, 3523, 5057, 5691, 8169, 10569, 15171, 24661, 35399, 73983, 105419, 106197, 316257, 737933, 1370447, 2213799, 4111341, 9593129, 28779387]

約数ペア:

[(1, 28779387), (3, 9593129), (7, 4111341), (13, 2213799), (21, 1370447), (39, 737933), (91, 316257), (271, 106197), (273, 105419), (389, 73983), (813, 35399), (1167, 24661), (1897, 15171), (2723, 10569), (3523, 8169), (5057, 5691)]