81557500

素因数分解:

$2^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:161

約数の個数: 120

約数和(自身を含む): 200748240

約数和(自身を除く): 119190740

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 25, 34, 38, 50, 68, 76, 85, 95, 100, 101, 125, 170, 190, 202, 250, 323, 340, 380, 404, 425, 475, 500, 505, 625, 646, 850, 950, 1010, 1250, 1292, 1615, 1700, 1717, 1900, 1919, 2020, 2125, 2375, 2500, 2525, 3230, 3434, 3838, 4250, 4750, 5050, 6460, 6868, 7676, 8075, 8500, 8585, 9500, 9595, 10100, 10625, 11875, 12625, 16150, 17170, 19190, 21250, 23750, 25250, 32300, 32623, 34340, 38380, 40375, 42500, 42925, 47500, 47975, 50500, 63125, 65246, 80750, 85850, 95950, 126250, 130492, 161500, 163115, 171700, 191900, 201875, 214625, 239875, 252500, 326230, 403750, 429250, 479750, 652460, 807500, 815575, 858500, 959500, 1073125, 1199375, 1631150, 2146250, 2398750, 3262300, 4077875, 4292500, 4797500, 8155750, 16311500, 20389375, 40778750, 81557500]

約数ペア:

[(1, 81557500), (2, 40778750), (4, 20389375), (5, 16311500), (10, 8155750), (17, 4797500), (19, 4292500), (20, 4077875), (25, 3262300), (34, 2398750), (38, 2146250), (50, 1631150), (68, 1199375), (76, 1073125), (85, 959500), (95, 858500), (100, 815575), (101, 807500), (125, 652460), (170, 479750), (190, 429250), (202, 403750), (250, 326230), (323, 252500), (340, 239875), (380, 214625), (404, 201875), (425, 191900), (475, 171700), (500, 163115), (505, 161500), (625, 130492), (646, 126250), (850, 95950), (950, 85850), (1010, 80750), (1250, 65246), (1292, 63125), (1615, 50500), (1700, 47975), (1717, 47500), (1900, 42925), (1919, 42500), (2020, 40375), (2125, 38380), (2375, 34340), (2500, 32623), (2525, 32300), (3230, 25250), (3434, 23750), (3838, 21250), (4250, 19190), (4750, 17170), (5050, 16150), (6460, 12625), (6868, 11875), (7676, 10625), (8075, 10100), (8500, 9595), (8585, 9500)]