19987110

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1553}}^1$

素因数の和:1590

約数の個数: 96

約数和(自身を含む): 61090848

約数和(自身を除く): 41103738

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 13, 15, 18, 22, 26, 30, 33, 39, 45, 55, 65, 66, 78, 90, 99, 110, 117, 130, 143, 165, 195, 198, 234, 286, 330, 390, 429, 495, 585, 715, 858, 990, 1170, 1287, 1430, 1553, 2145, 2574, 3106, 4290, 4659, 6435, 7765, 9318, 12870, 13977, 15530, 17083, 20189, 23295, 27954, 34166, 40378, 46590, 51249, 60567, 69885, 85415, 100945, 102498, 121134, 139770, 153747, 170830, 181701, 201890, 222079, 256245, 302835, 307494, 363402, 444158, 512490, 605670, 666237, 768735, 908505, 1110395, 1332474, 1537470, 1817010, 1998711, 2220790, 3331185, 3997422, 6662370, 9993555, 19987110]

約数ペア:

[(1, 19987110), (2, 9993555), (3, 6662370), (5, 3997422), (6, 3331185), (9, 2220790), (10, 1998711), (11, 1817010), (13, 1537470), (15, 1332474), (18, 1110395), (22, 908505), (26, 768735), (30, 666237), (33, 605670), (39, 512490), (45, 444158), (55, 363402), (65, 307494), (66, 302835), (78, 256245), (90, 222079), (99, 201890), (110, 181701), (117, 170830), (130, 153747), (143, 139770), (165, 121134), (195, 102498), (198, 100945), (234, 85415), (286, 69885), (330, 60567), (390, 51249), (429, 46590), (495, 40378), (585, 34166), (715, 27954), (858, 23295), (990, 20189), (1170, 17083), (1287, 15530), (1430, 13977), (1553, 12870), (2145, 9318), (2574, 7765), (3106, 6435), (4290, 4659)]