278268380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{563}}^1\times {\mathrm{1901}}^1$

素因数の和:2486

約数の個数: 48

約数和(自身を含む): 630764064

約数和(自身を除く): 352495684

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 563, 1126, 1901, 2252, 2815, 3802, 5630, 7319, 7604, 9505, 11260, 14638, 19010, 24713, 29276, 36595, 38020, 49426, 73190, 98852, 123565, 146380, 247130, 494260, 1070263, 2140526, 4281052, 5351315, 10702630, 13913419, 21405260, 27826838, 55653676, 69567095, 139134190, 278268380]

約数ペア:

[(1, 278268380), (2, 139134190), (4, 69567095), (5, 55653676), (10, 27826838), (13, 21405260), (20, 13913419), (26, 10702630), (52, 5351315), (65, 4281052), (130, 2140526), (260, 1070263), (563, 494260), (1126, 247130), (1901, 146380), (2252, 123565), (2815, 98852), (3802, 73190), (5630, 49426), (7319, 38020), (7604, 36595), (9505, 29276), (11260, 24713), (14638, 19010)]