21497850

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:173

約数の個数: 144

約数和(自身を含む): 65111904

約数和(自身を除く): 43614054

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 25, 30, 33, 43, 45, 50, 55, 66, 75, 86, 90, 99, 101, 110, 129, 150, 165, 198, 202, 215, 225, 258, 275, 303, 330, 387, 430, 450, 473, 495, 505, 550, 606, 645, 774, 825, 909, 946, 990, 1010, 1075, 1111, 1290, 1419, 1515, 1650, 1818, 1935, 2150, 2222, 2365, 2475, 2525, 2838, 3030, 3225, 3333, 3870, 4257, 4343, 4545, 4730, 4950, 5050, 5555, 6450, 6666, 7095, 7575, 8514, 8686, 9090, 9675, 9999, 11110, 11825, 13029, 14190, 15150, 16665, 19350, 19998, 21285, 21715, 22725, 23650, 26058, 27775, 33330, 35475, 39087, 42570, 43430, 45450, 47773, 49995, 55550, 65145, 70950, 78174, 83325, 95546, 99990, 106425, 108575, 130290, 143319, 166650, 195435, 212850, 217150, 238865, 249975, 286638, 325725, 390870, 429957, 477730, 499950, 651450, 716595, 859914, 977175, 1194325, 1433190, 1954350, 2149785, 2388650, 3582975, 4299570, 7165950, 10748925, 21497850]

約数ペア:

[(1, 21497850), (2, 10748925), (3, 7165950), (5, 4299570), (6, 3582975), (9, 2388650), (10, 2149785), (11, 1954350), (15, 1433190), (18, 1194325), (22, 977175), (25, 859914), (30, 716595), (33, 651450), (43, 499950), (45, 477730), (50, 429957), (55, 390870), (66, 325725), (75, 286638), (86, 249975), (90, 238865), (99, 217150), (101, 212850), (110, 195435), (129, 166650), (150, 143319), (165, 130290), (198, 108575), (202, 106425), (215, 99990), (225, 95546), (258, 83325), (275, 78174), (303, 70950), (330, 65145), (387, 55550), (430, 49995), (450, 47773), (473, 45450), (495, 43430), (505, 42570), (550, 39087), (606, 35475), (645, 33330), (774, 27775), (825, 26058), (909, 23650), (946, 22725), (990, 21715), (1010, 21285), (1075, 19998), (1111, 19350), (1290, 16665), (1419, 15150), (1515, 14190), (1650, 13029), (1818, 11825), (1935, 11110), (2150, 9999), (2222, 9675), (2365, 9090), (2475, 8686), (2525, 8514), (2838, 7575), (3030, 7095), (3225, 6666), (3333, 6450), (3870, 5555), (4257, 5050), (4343, 4950), (4545, 4730)]