21903070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1993}}^1$

素因数の和:2164

約数の個数: 32

約数和(自身を含む): 45367488

約数和(自身を除く): 23464418

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 157, 314, 785, 1099, 1570, 1993, 2198, 3986, 5495, 9965, 10990, 13951, 19930, 27902, 69755, 139510, 312901, 625802, 1564505, 2190307, 3129010, 4380614, 10951535, 21903070]

約数ペア:

[(1, 21903070), (2, 10951535), (5, 4380614), (7, 3129010), (10, 2190307), (14, 1564505), (35, 625802), (70, 312901), (157, 139510), (314, 69755), (785, 27902), (1099, 19930), (1570, 13951), (1993, 10990), (2198, 9965), (3986, 5495)]