81646120

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{27961}}^1$

素因数の和:28045

約数の個数: 32

約数和(自身を含む): 186226920

約数和(自身を除く): 104580800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 27961, 55922, 111844, 139805, 223688, 279610, 559220, 1118440, 2041153, 4082306, 8164612, 10205765, 16329224, 20411530, 40823060, 81646120]

約数ペア:

[(1, 81646120), (2, 40823060), (4, 20411530), (5, 16329224), (8, 10205765), (10, 8164612), (20, 4082306), (40, 2041153), (73, 1118440), (146, 559220), (292, 279610), (365, 223688), (584, 139805), (730, 111844), (1460, 55922), (2920, 27961)]