78864460

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:706

約数の個数: 48

約数和(自身を含む): 169989120

約数和(自身を除く): 91124660

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 127, 244, 254, 305, 508, 509, 610, 635, 1018, 1220, 1270, 2036, 2540, 2545, 5090, 7747, 10180, 15494, 30988, 31049, 38735, 62098, 64643, 77470, 124196, 129286, 154940, 155245, 258572, 310490, 323215, 620980, 646430, 1292860, 3943223, 7886446, 15772892, 19716115, 39432230, 78864460]

約数ペア:

[(1, 78864460), (2, 39432230), (4, 19716115), (5, 15772892), (10, 7886446), (20, 3943223), (61, 1292860), (122, 646430), (127, 620980), (244, 323215), (254, 310490), (305, 258572), (508, 155245), (509, 154940), (610, 129286), (635, 124196), (1018, 77470), (1220, 64643), (1270, 62098), (2036, 38735), (2540, 31049), (2545, 30988), (5090, 15494), (7747, 10180)]