16806400

素因数分解:

$2^9\times 5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:142

約数の個数: 120

約数和(自身を含む): 45286164

約数和(自身を除く): 28479764

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 101, 104, 128, 130, 160, 200, 202, 208, 256, 260, 320, 325, 400, 404, 416, 505, 512, 520, 640, 650, 800, 808, 832, 1010, 1040, 1280, 1300, 1313, 1600, 1616, 1664, 2020, 2080, 2525, 2560, 2600, 2626, 3200, 3232, 3328, 4040, 4160, 5050, 5200, 5252, 6400, 6464, 6565, 6656, 8080, 8320, 10100, 10400, 10504, 12800, 12928, 13130, 16160, 16640, 20200, 20800, 21008, 25856, 26260, 32320, 32825, 33280, 40400, 41600, 42016, 51712, 52520, 64640, 65650, 80800, 83200, 84032, 105040, 129280, 131300, 161600, 166400, 168064, 210080, 258560, 262600, 323200, 336128, 420160, 525200, 646400, 672256, 840320, 1050400, 1292800, 1680640, 2100800, 3361280, 4201600, 8403200, 16806400]

約数ペア:

[(1, 16806400), (2, 8403200), (4, 4201600), (5, 3361280), (8, 2100800), (10, 1680640), (13, 1292800), (16, 1050400), (20, 840320), (25, 672256), (26, 646400), (32, 525200), (40, 420160), (50, 336128), (52, 323200), (64, 262600), (65, 258560), (80, 210080), (100, 168064), (101, 166400), (104, 161600), (128, 131300), (130, 129280), (160, 105040), (200, 84032), (202, 83200), (208, 80800), (256, 65650), (260, 64640), (320, 52520), (325, 51712), (400, 42016), (404, 41600), (416, 40400), (505, 33280), (512, 32825), (520, 32320), (640, 26260), (650, 25856), (800, 21008), (808, 20800), (832, 20200), (1010, 16640), (1040, 16160), (1280, 13130), (1300, 12928), (1313, 12800), (1600, 10504), (1616, 10400), (1664, 10100), (2020, 8320), (2080, 8080), (2525, 6656), (2560, 6565), (2600, 6464), (2626, 6400), (3200, 5252), (3232, 5200), (3328, 5050), (4040, 4160)]