278021289

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{35117}}^1$

素因数の和:35169

約数の個数: 32

約数和(自身を含む): 471985920

約数和(自身を除く): 193964631

約数列:

[1, 3, 7, 13, 21, 29, 39, 87, 91, 203, 273, 377, 609, 1131, 2639, 7917, 35117, 105351, 245819, 456521, 737457, 1018393, 1369563, 3055179, 3195647, 7128751, 9586941, 13239109, 21386253, 39717327, 92673763, 278021289]

約数ペア:

[(1, 278021289), (3, 92673763), (7, 39717327), (13, 21386253), (21, 13239109), (29, 9586941), (39, 7128751), (87, 3195647), (91, 3055179), (203, 1369563), (273, 1018393), (377, 737457), (609, 456521), (1131, 245819), (2639, 105351), (7917, 35117)]