19485980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{593}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 23624164

約数列:

[1, 2, 4, 5, 10, 20, 31, 53, 62, 106, 124, 155, 212, 265, 310, 530, 593, 620, 1060, 1186, 1643, 2372, 2965, 3286, 5930, 6572, 8215, 11860, 16430, 18383, 31429, 32860, 36766, 62858, 73532, 91915, 125716, 157145, 183830, 314290, 367660, 628580, 974299, 1948598, 3897196, 4871495, 9742990, 19485980]

約数ペア:

[(1, 19485980), (2, 9742990), (4, 4871495), (5, 3897196), (10, 1948598), (20, 974299), (31, 628580), (53, 367660), (62, 314290), (106, 183830), (124, 157145), (155, 125716), (212, 91915), (265, 73532), (310, 62858), (530, 36766), (593, 32860), (620, 31429), (1060, 18383), (1186, 16430), (1643, 11860), (2372, 8215), (2965, 6572), (3286, 5930)]