21441840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12763}}^1$

素因数の和:12786

約数の個数: 80

約数和(自身を含む): 75971328

約数和(自身を除く): 54529488

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12763, 25526, 38289, 51052, 63815, 76578, 89341, 102104, 127630, 153156, 178682, 191445, 204208, 255260, 268023, 306312, 357364, 382890, 446705, 510520, 536046, 612624, 714728, 765780, 893410, 1021040, 1072092, 1340115, 1429456, 1531560, 1786820, 2144184, 2680230, 3063120, 3573640, 4288368, 5360460, 7147280, 10720920, 21441840]

約数ペア:

[(1, 21441840), (2, 10720920), (3, 7147280), (4, 5360460), (5, 4288368), (6, 3573640), (7, 3063120), (8, 2680230), (10, 2144184), (12, 1786820), (14, 1531560), (15, 1429456), (16, 1340115), (20, 1072092), (21, 1021040), (24, 893410), (28, 765780), (30, 714728), (35, 612624), (40, 536046), (42, 510520), (48, 446705), (56, 382890), (60, 357364), (70, 306312), (80, 268023), (84, 255260), (105, 204208), (112, 191445), (120, 178682), (140, 153156), (168, 127630), (210, 102104), (240, 89341), (280, 76578), (336, 63815), (420, 51052), (560, 38289), (840, 25526), (1680, 12763)]