21708050

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{367}}^1$

素因数の和:412

約数の個数: 72

約数和(自身を含む): 50103936

約数和(自身を除く): 28395886

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 130, 169, 175, 182, 325, 338, 350, 367, 455, 650, 734, 845, 910, 1183, 1690, 1835, 2275, 2366, 2569, 3670, 4225, 4550, 4771, 5138, 5915, 8450, 9175, 9542, 11830, 12845, 18350, 23855, 25690, 29575, 33397, 47710, 59150, 62023, 64225, 66794, 119275, 124046, 128450, 166985, 238550, 310115, 333970, 434161, 620230, 834925, 868322, 1550575, 1669850, 2170805, 3101150, 4341610, 10854025, 21708050]

約数ペア:

[(1, 21708050), (2, 10854025), (5, 4341610), (7, 3101150), (10, 2170805), (13, 1669850), (14, 1550575), (25, 868322), (26, 834925), (35, 620230), (50, 434161), (65, 333970), (70, 310115), (91, 238550), (130, 166985), (169, 128450), (175, 124046), (182, 119275), (325, 66794), (338, 64225), (350, 62023), (367, 59150), (455, 47710), (650, 33397), (734, 29575), (845, 25690), (910, 23855), (1183, 18350), (1690, 12845), (1835, 11830), (2275, 9542), (2366, 9175), (2569, 8450), (3670, 5915), (4225, 5138), (4550, 4771)]