78163840

素因数分解:

$2^7\times 5^1\times {\mathrm{122131}}^1$

素因数の和:122150

約数の個数: 32

約数和(自身を含む): 186861960

約数和(自身を除く): 108698120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 122131, 244262, 488524, 610655, 977048, 1221310, 1954096, 2442620, 3908192, 4885240, 7816384, 9770480, 15632768, 19540960, 39081920, 78163840]

約数ペア:

[(1, 78163840), (2, 39081920), (4, 19540960), (5, 15632768), (8, 9770480), (10, 7816384), (16, 4885240), (20, 3908192), (32, 2442620), (40, 1954096), (64, 1221310), (80, 977048), (128, 610655), (160, 488524), (320, 244262), (640, 122131)]