19998780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2237}}^1$

素因数の和:2398

約数の個数: 48

約数和(自身を含む): 56397600

約数和(自身を除く): 36398820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 149, 298, 447, 596, 745, 894, 1490, 1788, 2235, 2237, 2980, 4470, 4474, 6711, 8940, 8948, 11185, 13422, 22370, 26844, 33555, 44740, 67110, 134220, 333313, 666626, 999939, 1333252, 1666565, 1999878, 3333130, 3999756, 4999695, 6666260, 9999390, 19998780]

約数ペア:

[(1, 19998780), (2, 9999390), (3, 6666260), (4, 4999695), (5, 3999756), (6, 3333130), (10, 1999878), (12, 1666565), (15, 1333252), (20, 999939), (30, 666626), (60, 333313), (149, 134220), (298, 67110), (447, 44740), (596, 33555), (745, 26844), (894, 22370), (1490, 13422), (1788, 11185), (2235, 8948), (2237, 8940), (2980, 6711), (4470, 4474)]