21295960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4003}}^1$

素因数の和:4040

約数の個数: 64

約数和(自身を含む): 57657600

約数和(自身を除く): 36361640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4003, 5320, 8006, 16012, 20015, 28021, 32024, 40030, 56042, 76057, 80060, 112084, 140105, 152114, 160120, 224168, 280210, 304228, 380285, 532399, 560420, 608456, 760570, 1064798, 1120840, 1521140, 2129596, 2661995, 3042280, 4259192, 5323990, 10647980, 21295960]

約数ペア:

[(1, 21295960), (2, 10647980), (4, 5323990), (5, 4259192), (7, 3042280), (8, 2661995), (10, 2129596), (14, 1521140), (19, 1120840), (20, 1064798), (28, 760570), (35, 608456), (38, 560420), (40, 532399), (56, 380285), (70, 304228), (76, 280210), (95, 224168), (133, 160120), (140, 152114), (152, 140105), (190, 112084), (266, 80060), (280, 76057), (380, 56042), (532, 40030), (665, 32024), (760, 28021), (1064, 20015), (1330, 16012), (2660, 8006), (4003, 5320)]