256736000

素因数分解:

$2^8\times 5^3\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:215

約数の個数: 144

約数和(自身を含む): 654308928

約数和(自身を除く): 397572928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 71, 80, 100, 113, 125, 128, 142, 160, 200, 226, 250, 256, 284, 320, 355, 400, 452, 500, 565, 568, 640, 710, 800, 904, 1000, 1130, 1136, 1280, 1420, 1600, 1775, 1808, 2000, 2260, 2272, 2825, 2840, 3200, 3550, 3616, 4000, 4520, 4544, 5650, 5680, 6400, 7100, 7232, 8000, 8023, 8875, 9040, 9088, 11300, 11360, 14125, 14200, 14464, 16000, 16046, 17750, 18080, 18176, 22600, 22720, 28250, 28400, 28928, 32000, 32092, 35500, 36160, 40115, 45200, 45440, 56500, 56800, 64184, 71000, 72320, 80230, 90400, 90880, 113000, 113600, 128368, 142000, 144640, 160460, 180800, 200575, 226000, 227200, 256736, 284000, 320920, 361600, 401150, 452000, 454400, 513472, 568000, 641840, 723200, 802300, 904000, 1002875, 1026944, 1136000, 1283680, 1604600, 1808000, 2005750, 2053888, 2272000, 2567360, 3209200, 3616000, 4011500, 5134720, 6418400, 8023000, 10269440, 12836800, 16046000, 25673600, 32092000, 51347200, 64184000, 128368000, 256736000]

約数ペア:

[(1, 256736000), (2, 128368000), (4, 64184000), (5, 51347200), (8, 32092000), (10, 25673600), (16, 16046000), (20, 12836800), (25, 10269440), (32, 8023000), (40, 6418400), (50, 5134720), (64, 4011500), (71, 3616000), (80, 3209200), (100, 2567360), (113, 2272000), (125, 2053888), (128, 2005750), (142, 1808000), (160, 1604600), (200, 1283680), (226, 1136000), (250, 1026944), (256, 1002875), (284, 904000), (320, 802300), (355, 723200), (400, 641840), (452, 568000), (500, 513472), (565, 454400), (568, 452000), (640, 401150), (710, 361600), (800, 320920), (904, 284000), (1000, 256736), (1130, 227200), (1136, 226000), (1280, 200575), (1420, 180800), (1600, 160460), (1775, 144640), (1808, 142000), (2000, 128368), (2260, 113600), (2272, 113000), (2825, 90880), (2840, 90400), (3200, 80230), (3550, 72320), (3616, 71000), (4000, 64184), (4520, 56800), (4544, 56500), (5650, 45440), (5680, 45200), (6400, 40115), (7100, 36160), (7232, 35500), (8000, 32092), (8023, 32000), (8875, 28928), (9040, 28400), (9088, 28250), (11300, 22720), (11360, 22600), (14125, 18176), (14200, 18080), (14464, 17750), (16000, 16046)]