166561915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{631}}^1$

素因数の和:811

約数の個数: 32

約数和(自身を含む): 224243712

約数和(自身を除く): 57681797

約数列:

[1, 5, 13, 31, 65, 131, 155, 403, 631, 655, 1703, 2015, 3155, 4061, 8203, 8515, 19561, 20305, 41015, 52793, 82661, 97805, 254293, 263965, 413305, 1074593, 1271465, 2562491, 5372965, 12812455, 33312383, 166561915]

約数ペア:

[(1, 166561915), (5, 33312383), (13, 12812455), (31, 5372965), (65, 2562491), (131, 1271465), (155, 1074593), (403, 413305), (631, 263965), (655, 254293), (1703, 97805), (2015, 82661), (3155, 52793), (4061, 41015), (8203, 20305), (8515, 19561)]