15661728440

素因数分解:

$2^3\times 5^1\times {\mathrm{9781}}^1\times {\mathrm{40031}}^1$

素因数の和:49823

約数の個数: 32

約数和(自身を含む): 35243372160

約数和(自身を除く): 19581643720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9781, 19562, 39124, 40031, 48905, 78248, 80062, 97810, 160124, 195620, 200155, 320248, 391240, 400310, 800620, 1601240, 391543211, 783086422, 1566172844, 1957716055, 3132345688, 3915432110, 7830864220, 15661728440]

約数ペア:

[(1, 15661728440), (2, 7830864220), (4, 3915432110), (5, 3132345688), (8, 1957716055), (10, 1566172844), (20, 783086422), (40, 391543211), (9781, 1601240), (19562, 800620), (39124, 400310), (40031, 391240), (48905, 320248), (78248, 200155), (80062, 195620), (97810, 160124)]