261978780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{623759}}^1$

素因数の和:623778

約数の個数: 48

約数和(自身を含む): 838333440

約数和(自身を除く): 576354660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 623759, 1247518, 1871277, 2495036, 3118795, 3742554, 4366313, 6237590, 7485108, 8732626, 9356385, 12475180, 13098939, 17465252, 18712770, 21831565, 26197878, 37425540, 43663130, 52395756, 65494695, 87326260, 130989390, 261978780]

約数ペア:

[(1, 261978780), (2, 130989390), (3, 87326260), (4, 65494695), (5, 52395756), (6, 43663130), (7, 37425540), (10, 26197878), (12, 21831565), (14, 18712770), (15, 17465252), (20, 13098939), (21, 12475180), (28, 9356385), (30, 8732626), (35, 7485108), (42, 6237590), (60, 4366313), (70, 3742554), (84, 3118795), (105, 2495036), (140, 1871277), (210, 1247518), (420, 623759)]