81309900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1304

約数の個数: 144

約数和(自身を含む): 277760000

約数和(自身を除く): 196450100

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 31, 35, 42, 50, 60, 62, 70, 75, 84, 93, 100, 105, 124, 140, 150, 155, 175, 186, 210, 217, 300, 310, 350, 372, 420, 434, 465, 525, 620, 651, 700, 775, 868, 930, 1050, 1085, 1249, 1302, 1550, 1860, 2100, 2170, 2325, 2498, 2604, 3100, 3255, 3747, 4340, 4650, 4996, 5425, 6245, 6510, 7494, 8743, 9300, 10850, 12490, 13020, 14988, 16275, 17486, 18735, 21700, 24980, 26229, 31225, 32550, 34972, 37470, 38719, 43715, 52458, 62450, 65100, 74940, 77438, 87430, 93675, 104916, 116157, 124900, 131145, 154876, 174860, 187350, 193595, 218575, 232314, 262290, 271033, 374700, 387190, 437150, 464628, 524580, 542066, 580785, 655725, 774380, 813099, 874300, 967975, 1084132, 1161570, 1311450, 1355165, 1626198, 1935950, 2323140, 2622900, 2710330, 2903925, 3252396, 3871900, 4065495, 5420660, 5807850, 6775825, 8130990, 11615700, 13551650, 16261980, 20327475, 27103300, 40654950, 81309900]

約数ペア:

[(1, 81309900), (2, 40654950), (3, 27103300), (4, 20327475), (5, 16261980), (6, 13551650), (7, 11615700), (10, 8130990), (12, 6775825), (14, 5807850), (15, 5420660), (20, 4065495), (21, 3871900), (25, 3252396), (28, 2903925), (30, 2710330), (31, 2622900), (35, 2323140), (42, 1935950), (50, 1626198), (60, 1355165), (62, 1311450), (70, 1161570), (75, 1084132), (84, 967975), (93, 874300), (100, 813099), (105, 774380), (124, 655725), (140, 580785), (150, 542066), (155, 524580), (175, 464628), (186, 437150), (210, 387190), (217, 374700), (300, 271033), (310, 262290), (350, 232314), (372, 218575), (420, 193595), (434, 187350), (465, 174860), (525, 154876), (620, 131145), (651, 124900), (700, 116157), (775, 104916), (868, 93675), (930, 87430), (1050, 77438), (1085, 74940), (1249, 65100), (1302, 62450), (1550, 52458), (1860, 43715), (2100, 38719), (2170, 37470), (2325, 34972), (2498, 32550), (2604, 31225), (3100, 26229), (3255, 24980), (3747, 21700), (4340, 18735), (4650, 17486), (4996, 16275), (5425, 14988), (6245, 13020), (6510, 12490), (7494, 10850), (8743, 9300)]