18956720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8171}}^1$

素因数の和:8213

約数の個数: 40

約数和(自身を含む): 45599760

約数和(自身を除く): 26643040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8171, 16342, 32684, 40855, 65368, 81710, 130736, 163420, 236959, 326840, 473918, 653680, 947836, 1184795, 1895672, 2369590, 3791344, 4739180, 9478360, 18956720]

約数ペア:

[(1, 18956720), (2, 9478360), (4, 4739180), (5, 3791344), (8, 2369590), (10, 1895672), (16, 1184795), (20, 947836), (29, 653680), (40, 473918), (58, 326840), (80, 236959), (116, 163420), (145, 130736), (232, 81710), (290, 65368), (464, 40855), (580, 32684), (1160, 16342), (2320, 8171)]