19809160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{269}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 51321600

約数和(自身を除く): 31512440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 263, 269, 280, 526, 538, 1052, 1076, 1315, 1345, 1841, 1883, 2104, 2152, 2630, 2690, 3682, 3766, 5260, 5380, 7364, 7532, 9205, 9415, 10520, 10760, 14728, 15064, 18410, 18830, 36820, 37660, 70747, 73640, 75320, 141494, 282988, 353735, 495229, 565976, 707470, 990458, 1414940, 1980916, 2476145, 2829880, 3961832, 4952290, 9904580, 19809160]

約数ペア:

[(1, 19809160), (2, 9904580), (4, 4952290), (5, 3961832), (7, 2829880), (8, 2476145), (10, 1980916), (14, 1414940), (20, 990458), (28, 707470), (35, 565976), (40, 495229), (56, 353735), (70, 282988), (140, 141494), (263, 75320), (269, 73640), (280, 70747), (526, 37660), (538, 36820), (1052, 18830), (1076, 18410), (1315, 15064), (1345, 14728), (1841, 10760), (1883, 10520), (2104, 9415), (2152, 9205), (2630, 7532), (2690, 7364), (3682, 5380), (3766, 5260)]