21810138

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:363

約数の個数: 64

約数和(自身を含む): 53114880

約数和(自身を除く): 31304742

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 151, 181, 266, 302, 362, 399, 453, 543, 798, 906, 1057, 1086, 1267, 2114, 2534, 2869, 3171, 3439, 3801, 5738, 6342, 6878, 7602, 8607, 10317, 17214, 20083, 20634, 24073, 27331, 40166, 48146, 54662, 60249, 72219, 81993, 120498, 144438, 163986, 191317, 382634, 519289, 573951, 1038578, 1147902, 1557867, 3115734, 3635023, 7270046, 10905069, 21810138]

約数ペア:

[(1, 21810138), (2, 10905069), (3, 7270046), (6, 3635023), (7, 3115734), (14, 1557867), (19, 1147902), (21, 1038578), (38, 573951), (42, 519289), (57, 382634), (114, 191317), (133, 163986), (151, 144438), (181, 120498), (266, 81993), (302, 72219), (362, 60249), (399, 54662), (453, 48146), (543, 40166), (798, 27331), (906, 24073), (1057, 20634), (1086, 20083), (1267, 17214), (2114, 10317), (2534, 8607), (2869, 7602), (3171, 6878), (3439, 6342), (3801, 5738)]