21494760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25589}}^1$

素因数の和:25610

約数の個数: 64

約数和(自身を含む): 73699200

約数和(自身を除く): 52204440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25589, 51178, 76767, 102356, 127945, 153534, 179123, 204712, 255890, 307068, 358246, 383835, 511780, 537369, 614136, 716492, 767670, 895615, 1023560, 1074738, 1432984, 1535340, 1791230, 2149476, 2686845, 3070680, 3582460, 4298952, 5373690, 7164920, 10747380, 21494760]

約数ペア:

[(1, 21494760), (2, 10747380), (3, 7164920), (4, 5373690), (5, 4298952), (6, 3582460), (7, 3070680), (8, 2686845), (10, 2149476), (12, 1791230), (14, 1535340), (15, 1432984), (20, 1074738), (21, 1023560), (24, 895615), (28, 767670), (30, 716492), (35, 614136), (40, 537369), (42, 511780), (56, 383835), (60, 358246), (70, 307068), (84, 255890), (105, 204712), (120, 179123), (140, 153534), (168, 127945), (210, 102356), (280, 76767), (420, 51178), (840, 25589)]