20308743

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 36568896

約数和(自身を除く): 16260153

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 137, 181, 273, 411, 543, 819, 959, 1233, 1267, 1629, 1781, 2353, 2877, 3801, 5343, 7059, 8631, 11403, 12467, 16029, 16471, 21177, 24797, 37401, 49413, 74391, 112203, 148239, 173579, 223173, 322361, 520737, 967083, 1562211, 2256527, 2901249, 6769581, 20308743]

約数ペア:

[(1, 20308743), (3, 6769581), (7, 2901249), (9, 2256527), (13, 1562211), (21, 967083), (39, 520737), (63, 322361), (91, 223173), (117, 173579), (137, 148239), (181, 112203), (273, 74391), (411, 49413), (543, 37401), (819, 24797), (959, 21177), (1233, 16471), (1267, 16029), (1629, 12467), (1781, 11403), (2353, 8631), (2877, 7059), (3801, 5343)]