20209917

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{409}}^1$

素因数の和:613

約数の個数: 32

約数和(自身を含む): 33429760

約数和(自身を除く): 13219843

約数列:

[1, 3, 7, 13, 21, 39, 91, 181, 273, 409, 543, 1227, 1267, 2353, 2863, 3801, 5317, 7059, 8589, 15951, 16471, 37219, 49413, 74029, 111657, 222087, 518203, 962377, 1554609, 2887131, 6736639, 20209917]

約数ペア:

[(1, 20209917), (3, 6736639), (7, 2887131), (13, 1554609), (21, 962377), (39, 518203), (91, 222087), (181, 111657), (273, 74029), (409, 49413), (543, 37219), (1227, 16471), (1267, 15951), (2353, 8589), (2863, 7059), (3801, 5317)]