128732800

素因数分解:

$2^7\times 5^2\times 7^2\times {\mathrm{821}}^1$

素因数の和:859

約数の個数: 144

約数和(自身を含む): 370380870

約数和(自身を除く): 241648070

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 49, 50, 56, 64, 70, 80, 98, 100, 112, 128, 140, 160, 175, 196, 200, 224, 245, 280, 320, 350, 392, 400, 448, 490, 560, 640, 700, 784, 800, 821, 896, 980, 1120, 1225, 1400, 1568, 1600, 1642, 1960, 2240, 2450, 2800, 3136, 3200, 3284, 3920, 4105, 4480, 4900, 5600, 5747, 6272, 6568, 7840, 8210, 9800, 11200, 11494, 13136, 15680, 16420, 19600, 20525, 22400, 22988, 26272, 28735, 31360, 32840, 39200, 40229, 41050, 45976, 52544, 57470, 65680, 78400, 80458, 82100, 91952, 105088, 114940, 131360, 143675, 156800, 160916, 164200, 183904, 201145, 229880, 262720, 287350, 321832, 328400, 367808, 402290, 459760, 525440, 574700, 643664, 656800, 735616, 804580, 919520, 1005725, 1149400, 1287328, 1313600, 1609160, 1839040, 2011450, 2298800, 2574656, 2627200, 3218320, 3678080, 4022900, 4597600, 5149312, 6436640, 8045800, 9195200, 12873280, 16091600, 18390400, 25746560, 32183200, 64366400, 128732800]

約数ペア:

[(1, 128732800), (2, 64366400), (4, 32183200), (5, 25746560), (7, 18390400), (8, 16091600), (10, 12873280), (14, 9195200), (16, 8045800), (20, 6436640), (25, 5149312), (28, 4597600), (32, 4022900), (35, 3678080), (40, 3218320), (49, 2627200), (50, 2574656), (56, 2298800), (64, 2011450), (70, 1839040), (80, 1609160), (98, 1313600), (100, 1287328), (112, 1149400), (128, 1005725), (140, 919520), (160, 804580), (175, 735616), (196, 656800), (200, 643664), (224, 574700), (245, 525440), (280, 459760), (320, 402290), (350, 367808), (392, 328400), (400, 321832), (448, 287350), (490, 262720), (560, 229880), (640, 201145), (700, 183904), (784, 164200), (800, 160916), (821, 156800), (896, 143675), (980, 131360), (1120, 114940), (1225, 105088), (1400, 91952), (1568, 82100), (1600, 80458), (1642, 78400), (1960, 65680), (2240, 57470), (2450, 52544), (2800, 45976), (3136, 41050), (3200, 40229), (3284, 39200), (3920, 32840), (4105, 31360), (4480, 28735), (4900, 26272), (5600, 22988), (5747, 22400), (6272, 20525), (6568, 19600), (7840, 16420), (8210, 15680), (9800, 13136), (11200, 11494)]