21513660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{283}}^1$

素因数の和:483

約数の個数: 96

約数和(自身を含む): 69468672

約数和(自身を除く): 47955012

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, 181, 210, 283, 362, 420, 543, 566, 724, 849, 905, 1086, 1132, 1267, 1415, 1698, 1810, 1981, 2172, 2534, 2715, 2830, 3396, 3620, 3801, 3962, 4245, 5068, 5430, 5660, 5943, 6335, 7602, 7924, 8490, 9905, 10860, 11886, 12670, 15204, 16980, 19005, 19810, 23772, 25340, 29715, 38010, 39620, 51223, 59430, 76020, 102446, 118860, 153669, 204892, 256115, 307338, 358561, 512230, 614676, 717122, 768345, 1024460, 1075683, 1434244, 1536690, 1792805, 2151366, 3073380, 3585610, 4302732, 5378415, 7171220, 10756830, 21513660]

約数ペア:

[(1, 21513660), (2, 10756830), (3, 7171220), (4, 5378415), (5, 4302732), (6, 3585610), (7, 3073380), (10, 2151366), (12, 1792805), (14, 1536690), (15, 1434244), (20, 1075683), (21, 1024460), (28, 768345), (30, 717122), (35, 614676), (42, 512230), (60, 358561), (70, 307338), (84, 256115), (105, 204892), (140, 153669), (181, 118860), (210, 102446), (283, 76020), (362, 59430), (420, 51223), (543, 39620), (566, 38010), (724, 29715), (849, 25340), (905, 23772), (1086, 19810), (1132, 19005), (1267, 16980), (1415, 15204), (1698, 12670), (1810, 11886), (1981, 10860), (2172, 9905), (2534, 8490), (2715, 7924), (2830, 7602), (3396, 6335), (3620, 5943), (3801, 5660), (3962, 5430), (4245, 5068)]