18847971

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:253

約数の個数: 40

約数和(自身を含む): 30015744

約数和(自身を除く): 11167773

約数列:

[1, 3, 9, 23, 27, 67, 69, 81, 151, 201, 207, 453, 603, 621, 1359, 1541, 1809, 1863, 3473, 4077, 4623, 5427, 10117, 10419, 12231, 13869, 30351, 31257, 41607, 91053, 93771, 124821, 232691, 273159, 281313, 698073, 819477, 2094219, 6282657, 18847971]

約数ペア:

[(1, 18847971), (3, 6282657), (9, 2094219), (23, 819477), (27, 698073), (67, 281313), (69, 273159), (81, 232691), (151, 124821), (201, 93771), (207, 91053), (453, 41607), (603, 31257), (621, 30351), (1359, 13869), (1541, 12231), (1809, 10419), (1863, 10117), (3473, 5427), (4077, 4623)]