179777980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{1459}}^1$

素因数の和:1630

約数の個数: 48

約数和(自身を含む): 387787680

約数和(自身を除く): 208009700

約数列:

[1, 2, 4, 5, 10, 20, 61, 101, 122, 202, 244, 305, 404, 505, 610, 1010, 1220, 1459, 2020, 2918, 5836, 6161, 7295, 12322, 14590, 24644, 29180, 30805, 61610, 88999, 123220, 147359, 177998, 294718, 355996, 444995, 589436, 736795, 889990, 1473590, 1779980, 2947180, 8988899, 17977798, 35955596, 44944495, 89888990, 179777980]

約数ペア:

[(1, 179777980), (2, 89888990), (4, 44944495), (5, 35955596), (10, 17977798), (20, 8988899), (61, 2947180), (101, 1779980), (122, 1473590), (202, 889990), (244, 736795), (305, 589436), (404, 444995), (505, 355996), (610, 294718), (1010, 177998), (1220, 147359), (1459, 123220), (2020, 88999), (2918, 61610), (5836, 30805), (6161, 29180), (7295, 24644), (12322, 14590)]