81855705

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1\times {\mathrm{571}}^1$

素因数の和:1101

約数の個数: 32

約数和(自身を含む): 138378240

約数和(自身を除く): 56522535

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 503, 571, 1509, 1713, 2515, 2855, 7545, 8565, 9557, 10849, 28671, 32547, 47785, 54245, 143355, 162735, 287213, 861639, 1436065, 4308195, 5457047, 16371141, 27285235, 81855705]

約数ペア:

[(1, 81855705), (3, 27285235), (5, 16371141), (15, 5457047), (19, 4308195), (57, 1436065), (95, 861639), (285, 287213), (503, 162735), (571, 143355), (1509, 54245), (1713, 47785), (2515, 32547), (2855, 28671), (7545, 10849), (8565, 9557)]