21063544

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2539}}^1$

素因数の和:2623

約数の個数: 32

約数和(自身を含む): 42519600

約数和(自身を除く): 21456056

約数列:

[1, 2, 4, 8, 17, 34, 61, 68, 122, 136, 244, 488, 1037, 2074, 2539, 4148, 5078, 8296, 10156, 20312, 43163, 86326, 154879, 172652, 309758, 345304, 619516, 1239032, 2632943, 5265886, 10531772, 21063544]

約数ペア:

[(1, 21063544), (2, 10531772), (4, 5265886), (8, 2632943), (17, 1239032), (34, 619516), (61, 345304), (68, 309758), (122, 172652), (136, 154879), (244, 86326), (488, 43163), (1037, 20312), (2074, 10156), (2539, 8296), (4148, 5078)]