256742000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:196

約数の個数: 160

約数和(自身を含む): 662957568

約数和(自身を除く): 406215568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 41, 50, 62, 80, 82, 100, 101, 124, 125, 155, 164, 200, 202, 205, 248, 250, 310, 328, 400, 404, 410, 496, 500, 505, 620, 656, 775, 808, 820, 1000, 1010, 1025, 1240, 1271, 1550, 1616, 1640, 2000, 2020, 2050, 2480, 2525, 2542, 3100, 3131, 3280, 3875, 4040, 4100, 4141, 5050, 5084, 5125, 6200, 6262, 6355, 7750, 8080, 8200, 8282, 10100, 10168, 10250, 12400, 12524, 12625, 12710, 15500, 15655, 16400, 16564, 20200, 20336, 20500, 20705, 25048, 25250, 25420, 31000, 31310, 31775, 33128, 40400, 41000, 41410, 50096, 50500, 50840, 62000, 62620, 63550, 66256, 78275, 82000, 82820, 101000, 101680, 103525, 125240, 127100, 128371, 156550, 158875, 165640, 202000, 207050, 250480, 254200, 256742, 313100, 317750, 331280, 391375, 414100, 508400, 513484, 517625, 626200, 635500, 641855, 782750, 828200, 1026968, 1035250, 1252400, 1271000, 1283710, 1565500, 1656400, 2053936, 2070500, 2542000, 2567420, 3131000, 3209275, 4141000, 5134840, 6262000, 6418550, 8282000, 10269680, 12837100, 16046375, 25674200, 32092750, 51348400, 64185500, 128371000, 256742000]

約数ペア:

[(1, 256742000), (2, 128371000), (4, 64185500), (5, 51348400), (8, 32092750), (10, 25674200), (16, 16046375), (20, 12837100), (25, 10269680), (31, 8282000), (40, 6418550), (41, 6262000), (50, 5134840), (62, 4141000), (80, 3209275), (82, 3131000), (100, 2567420), (101, 2542000), (124, 2070500), (125, 2053936), (155, 1656400), (164, 1565500), (200, 1283710), (202, 1271000), (205, 1252400), (248, 1035250), (250, 1026968), (310, 828200), (328, 782750), (400, 641855), (404, 635500), (410, 626200), (496, 517625), (500, 513484), (505, 508400), (620, 414100), (656, 391375), (775, 331280), (808, 317750), (820, 313100), (1000, 256742), (1010, 254200), (1025, 250480), (1240, 207050), (1271, 202000), (1550, 165640), (1616, 158875), (1640, 156550), (2000, 128371), (2020, 127100), (2050, 125240), (2480, 103525), (2525, 101680), (2542, 101000), (3100, 82820), (3131, 82000), (3280, 78275), (3875, 66256), (4040, 63550), (4100, 62620), (4141, 62000), (5050, 50840), (5084, 50500), (5125, 50096), (6200, 41410), (6262, 41000), (6355, 40400), (7750, 33128), (8080, 31775), (8200, 31310), (8282, 31000), (10100, 25420), (10168, 25250), (10250, 25048), (12400, 20705), (12524, 20500), (12625, 20336), (12710, 20200), (15500, 16564), (15655, 16400)]