19905130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:463

約数の個数: 64

約数和(自身を含む): 44478720

約数和(自身を除く): 24573590

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 43, 70, 85, 86, 119, 170, 215, 238, 301, 389, 430, 595, 602, 731, 778, 1190, 1462, 1505, 1945, 2723, 3010, 3655, 3890, 5117, 5446, 6613, 7310, 10234, 13226, 13615, 16727, 25585, 27230, 33065, 33454, 46291, 51170, 66130, 83635, 92582, 117089, 167270, 231455, 234178, 284359, 462910, 568718, 585445, 1170890, 1421795, 1990513, 2843590, 3981026, 9952565, 19905130]

約数ペア:

[(1, 19905130), (2, 9952565), (5, 3981026), (7, 2843590), (10, 1990513), (14, 1421795), (17, 1170890), (34, 585445), (35, 568718), (43, 462910), (70, 284359), (85, 234178), (86, 231455), (119, 167270), (170, 117089), (215, 92582), (238, 83635), (301, 66130), (389, 51170), (430, 46291), (595, 33454), (602, 33065), (731, 27230), (778, 25585), (1190, 16727), (1462, 13615), (1505, 13226), (1945, 10234), (2723, 7310), (3010, 6613), (3655, 5446), (3890, 5117)]