20910640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13757}}^1$

素因数の和:13789

約数の個数: 40

約数和(自身を含む): 51179760

約数和(自身を除く): 30269120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13757, 27514, 55028, 68785, 110056, 137570, 220112, 261383, 275140, 522766, 550280, 1045532, 1100560, 1306915, 2091064, 2613830, 4182128, 5227660, 10455320, 20910640]

約数ペア:

[(1, 20910640), (2, 10455320), (4, 5227660), (5, 4182128), (8, 2613830), (10, 2091064), (16, 1306915), (19, 1100560), (20, 1045532), (38, 550280), (40, 522766), (76, 275140), (80, 261383), (95, 220112), (152, 137570), (190, 110056), (304, 68785), (380, 55028), (760, 27514), (1520, 13757)]