257817700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^2$

素因数の和:270

約数の個数: 108

約数和(自身を含む): 666124032

約数和(自身を除く): 408306332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 109, 124, 140, 155, 175, 217, 218, 310, 350, 434, 436, 545, 620, 700, 763, 775, 868, 1085, 1090, 1526, 1550, 2170, 2180, 2725, 3052, 3100, 3379, 3815, 4340, 5425, 5450, 6758, 7630, 10850, 10900, 11881, 13516, 15260, 16895, 19075, 21700, 23653, 23762, 33790, 38150, 47306, 47524, 59405, 67580, 76300, 83167, 84475, 94612, 118265, 118810, 166334, 168950, 236530, 237620, 297025, 332668, 337900, 368311, 415835, 473060, 591325, 594050, 736622, 831670, 1182650, 1188100, 1473244, 1663340, 1841555, 2079175, 2365300, 2578177, 3683110, 4158350, 5156354, 7366220, 8316700, 9207775, 10312708, 12890885, 18415550, 25781770, 36831100, 51563540, 64454425, 128908850, 257817700]

約数ペア:

[(1, 257817700), (2, 128908850), (4, 64454425), (5, 51563540), (7, 36831100), (10, 25781770), (14, 18415550), (20, 12890885), (25, 10312708), (28, 9207775), (31, 8316700), (35, 7366220), (50, 5156354), (62, 4158350), (70, 3683110), (100, 2578177), (109, 2365300), (124, 2079175), (140, 1841555), (155, 1663340), (175, 1473244), (217, 1188100), (218, 1182650), (310, 831670), (350, 736622), (434, 594050), (436, 591325), (545, 473060), (620, 415835), (700, 368311), (763, 337900), (775, 332668), (868, 297025), (1085, 237620), (1090, 236530), (1526, 168950), (1550, 166334), (2170, 118810), (2180, 118265), (2725, 94612), (3052, 84475), (3100, 83167), (3379, 76300), (3815, 67580), (4340, 59405), (5425, 47524), (5450, 47306), (6758, 38150), (7630, 33790), (10850, 23762), (10900, 23653), (11881, 21700), (13516, 19075), (15260, 16895)]