21571270

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:378

約数の個数: 64

約数和(自身を含む): 47808000

約数和(自身を除く): 26236730

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 331, 343, 490, 662, 665, 686, 931, 1330, 1655, 1715, 1862, 2317, 3310, 3430, 4634, 4655, 6289, 6517, 9310, 11585, 12578, 13034, 16219, 23170, 31445, 32438, 32585, 44023, 62890, 65170, 81095, 88046, 113533, 162190, 220115, 227066, 308161, 440230, 567665, 616322, 1135330, 1540805, 2157127, 3081610, 4314254, 10785635, 21571270]

約数ペア:

[(1, 21571270), (2, 10785635), (5, 4314254), (7, 3081610), (10, 2157127), (14, 1540805), (19, 1135330), (35, 616322), (38, 567665), (49, 440230), (70, 308161), (95, 227066), (98, 220115), (133, 162190), (190, 113533), (245, 88046), (266, 81095), (331, 65170), (343, 62890), (490, 44023), (662, 32585), (665, 32438), (686, 31445), (931, 23170), (1330, 16219), (1655, 13034), (1715, 12578), (1862, 11585), (2317, 9310), (3310, 6517), (3430, 6289), (4634, 4655)]