19802560

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3257}}^1$

素因数の和:3293

約数の個数: 56

約数和(自身を含む): 49651920

約数和(自身を除く): 29849360

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3257, 6080, 6514, 13028, 16285, 26056, 32570, 52112, 61883, 65140, 104224, 123766, 130280, 208448, 247532, 260560, 309415, 495064, 521120, 618830, 990128, 1042240, 1237660, 1980256, 2475320, 3960512, 4950640, 9901280, 19802560]

約数ペア:

[(1, 19802560), (2, 9901280), (4, 4950640), (5, 3960512), (8, 2475320), (10, 1980256), (16, 1237660), (19, 1042240), (20, 990128), (32, 618830), (38, 521120), (40, 495064), (64, 309415), (76, 260560), (80, 247532), (95, 208448), (152, 130280), (160, 123766), (190, 104224), (304, 65140), (320, 61883), (380, 52112), (608, 32570), (760, 26056), (1216, 16285), (1520, 13028), (3040, 6514), (3257, 6080)]