2100800

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:136

約数の個数: 84

約数和(自身を含む): 5622036

約数和(自身を除く): 3521236

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 101, 104, 130, 160, 200, 202, 208, 260, 320, 325, 400, 404, 416, 505, 520, 650, 800, 808, 832, 1010, 1040, 1300, 1313, 1600, 1616, 2020, 2080, 2525, 2600, 2626, 3232, 4040, 4160, 5050, 5200, 5252, 6464, 6565, 8080, 10100, 10400, 10504, 13130, 16160, 20200, 20800, 21008, 26260, 32320, 32825, 40400, 42016, 52520, 65650, 80800, 84032, 105040, 131300, 161600, 210080, 262600, 420160, 525200, 1050400, 2100800]

約数ペア:

[(1, 2100800), (2, 1050400), (4, 525200), (5, 420160), (8, 262600), (10, 210080), (13, 161600), (16, 131300), (20, 105040), (25, 84032), (26, 80800), (32, 65650), (40, 52520), (50, 42016), (52, 40400), (64, 32825), (65, 32320), (80, 26260), (100, 21008), (101, 20800), (104, 20200), (130, 16160), (160, 13130), (200, 10504), (202, 10400), (208, 10100), (260, 8080), (320, 6565), (325, 6464), (400, 5252), (404, 5200), (416, 5050), (505, 4160), (520, 4040), (650, 3232), (800, 2626), (808, 2600), (832, 2525), (1010, 2080), (1040, 2020), (1300, 1616), (1313, 1600)]