81542015

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{557}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 109278720

約数和(自身を除く): 27736705

約数列:

[1, 5, 19, 23, 67, 95, 115, 335, 437, 557, 1273, 1541, 2185, 2785, 6365, 7705, 10583, 12811, 29279, 37319, 52915, 64055, 146395, 186595, 243409, 709061, 858337, 1217045, 3545305, 4291685, 16308403, 81542015]

約数ペア:

[(1, 81542015), (5, 16308403), (19, 4291685), (23, 3545305), (67, 1217045), (95, 858337), (115, 709061), (335, 243409), (437, 186595), (557, 146395), (1273, 64055), (1541, 52915), (2185, 37319), (2785, 29279), (6365, 12811), (7705, 10583)]