18872840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{9629}}^1$

素因数の和:9654

約数の個数: 48

約数和(自身を含む): 49401900

約数和(自身を除く): 30529060

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 9629, 19258, 38516, 48145, 67403, 77032, 96290, 134806, 192580, 269612, 337015, 385160, 471821, 539224, 674030, 943642, 1348060, 1887284, 2359105, 2696120, 3774568, 4718210, 9436420, 18872840]

約数ペア:

[(1, 18872840), (2, 9436420), (4, 4718210), (5, 3774568), (7, 2696120), (8, 2359105), (10, 1887284), (14, 1348060), (20, 943642), (28, 674030), (35, 539224), (40, 471821), (49, 385160), (56, 337015), (70, 269612), (98, 192580), (140, 134806), (196, 96290), (245, 77032), (280, 67403), (392, 48145), (490, 38516), (980, 19258), (1960, 9629)]