17943940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1913}}^1$

素因数の和:1996

約数の個数: 48

約数和(自身を含む): 43731072

約数和(自身を除く): 25787132

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 1913, 2345, 3826, 4690, 7652, 9380, 9565, 13391, 19130, 26782, 38260, 53564, 66955, 128171, 133910, 256342, 267820, 512684, 640855, 897197, 1281710, 1794394, 2563420, 3588788, 4485985, 8971970, 17943940]

約数ペア:

[(1, 17943940), (2, 8971970), (4, 4485985), (5, 3588788), (7, 2563420), (10, 1794394), (14, 1281710), (20, 897197), (28, 640855), (35, 512684), (67, 267820), (70, 256342), (134, 133910), (140, 128171), (268, 66955), (335, 53564), (469, 38260), (670, 26782), (938, 19130), (1340, 13391), (1876, 9565), (1913, 9380), (2345, 7652), (3826, 4690)]