280227780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{222403}}^1$

素因数の和:222425

約数の個数: 72

約数和(自身を含む): 971460672

約数和(自身を除く): 691232892

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 222403, 444806, 667209, 889612, 1112015, 1334418, 1556821, 2001627, 2224030, 2668836, 3113642, 3336045, 4003254, 4448060, 4670463, 6227284, 6672090, 7784105, 8006508, 9340926, 10008135, 13344180, 14011389, 15568210, 18681852, 20016270, 23352315, 28022778, 31136420, 40032540, 46704630, 56045556, 70056945, 93409260, 140113890, 280227780]

約数ペア:

[(1, 280227780), (2, 140113890), (3, 93409260), (4, 70056945), (5, 56045556), (6, 46704630), (7, 40032540), (9, 31136420), (10, 28022778), (12, 23352315), (14, 20016270), (15, 18681852), (18, 15568210), (20, 14011389), (21, 13344180), (28, 10008135), (30, 9340926), (35, 8006508), (36, 7784105), (42, 6672090), (45, 6227284), (60, 4670463), (63, 4448060), (70, 4003254), (84, 3336045), (90, 3113642), (105, 2668836), (126, 2224030), (140, 2001627), (180, 1556821), (210, 1334418), (252, 1112015), (315, 889612), (420, 667209), (630, 444806), (1260, 222403)]