409020980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{3461}}^1$

素因数の和:3800

約数の個数: 48

約数和(自身を含む): 907320960

約数和(自身を除く): 498299980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 311, 380, 622, 1244, 1555, 3110, 3461, 5909, 6220, 6922, 11818, 13844, 17305, 23636, 29545, 34610, 59090, 65759, 69220, 118180, 131518, 263036, 328795, 657590, 1076371, 1315180, 2152742, 4305484, 5381855, 10763710, 20451049, 21527420, 40902098, 81804196, 102255245, 204510490, 409020980]

約数ペア:

[(1, 409020980), (2, 204510490), (4, 102255245), (5, 81804196), (10, 40902098), (19, 21527420), (20, 20451049), (38, 10763710), (76, 5381855), (95, 4305484), (190, 2152742), (311, 1315180), (380, 1076371), (622, 657590), (1244, 328795), (1555, 263036), (3110, 131518), (3461, 118180), (5909, 69220), (6220, 65759), (6922, 59090), (11818, 34610), (13844, 29545), (17305, 23636)]