39979180

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 86153760

約数和(自身を除く): 46174580

約数列:

[1, 2, 4, 5, 10, 20, 73, 139, 146, 197, 278, 292, 365, 394, 556, 695, 730, 788, 985, 1390, 1460, 1970, 2780, 3940, 10147, 14381, 20294, 27383, 28762, 40588, 50735, 54766, 57524, 71905, 101470, 109532, 136915, 143810, 202940, 273830, 287620, 547660, 1998959, 3997918, 7995836, 9994795, 19989590, 39979180]

約数ペア:

[(1, 39979180), (2, 19989590), (4, 9994795), (5, 7995836), (10, 3997918), (20, 1998959), (73, 547660), (139, 287620), (146, 273830), (197, 202940), (278, 143810), (292, 136915), (365, 109532), (394, 101470), (556, 71905), (695, 57524), (730, 54766), (788, 50735), (985, 40588), (1390, 28762), (1460, 27383), (1970, 20294), (2780, 14381), (3940, 10147)]